# Best Carbon Accounting Software - Page 5

*By [Lauren Worth](https://research.g2.com/insights/author/lauren-worth)*


Carbon accounting software helps companies track carbon emissions and implement programs to reduce them through decarbonization. Businesses use this software to improve their environmental protection initiatives and demonstrate their efficiency to interested parties like investors, partners, government agencies, NGOs, and the public.

This type of software is used mainly by industries that produce high emissions, such as manufacturing, oil and gas, mining, transportation, and utilities. Carbon accounting software can also be used by IT companies since hardware, such as servers, produce CO2 emissions. While carbon accounting features may be found in [sustainability management software](https://www.g2.com/categories/sustainability-management) and [environmental, social, and governance (ESG) reporting software](https://www.g2.com/categories/environmental-social-and-governance-esg-reporting), many vendors provide standalone software that offer advanced features such as decarbonization.

To qualify for inclusion in the Carbon Accounting category, a product must:

- Provide features for monitoring carbon emissions from multiple sources
- Create emissions reports that are compliant with carbon regulations
- Allow users to create and analyze emissions scenarios and forecasts
- Deliver decarbonization plans to help companies reduce carbon emissions
- Provide access to marketplaces to buy and sell carbon credits
- Include metrics and analytics specific to carbon accounting






## G2 Grid® for Carbon Accounting Software
![G2 Grid® for Carbon Accounting Software plotting products by satisfaction and market presence](https://www.g2.com/categories/carbon-accounting/grids.png?focus%5B%5D=1301114&focus%5B%5D=1323049&focus%5B%5D=20026&focus%5B%5D=1868342&focus%5B%5D=143528&focus%5B%5D=169047&focus%5B%5D=1240642&focus%5B%5D=1318221)
Highlighted products: osapiens, Watershed, Workiva, Orki, Greenly, Trace, carbmee EIS, and Google Carbon Footprint.
Underlying data: [Grid® JSON](https://www.g2.com/categories/carbon-accounting/grids.json?focus%5B%5D=osapiens&focus%5B%5D=watershed&focus%5B%5D=workiva-workiva&focus%5B%5D=orki&focus%5B%5D=greenly&focus%5B%5D=trace-2025-03-07&focus%5B%5D=carbmee-eis&focus%5B%5D=google-carbon-footprint)


## How Many Carbon Accounting Software Products Does G2 Track?
**Total Products under this Category:** 134

### Category Stats (Jul 2026)
- **Average Rating**: 4.64/5 The average rating of products in this category, based on all submitted ratings
- **Top Trending Product**: Ecologi (+4.44%) - Among all products in this category, Ecologi recorded the largest rating increase compared to last month
*Last updated: July 12, 2026*


## How Does G2 Rank Carbon Accounting Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 3,100+ Authentic Reviews
- 134+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.


## Which Carbon Accounting Software Is Best for Your Use Case?

- **Leader:** [osapiens](https://www.g2.com/products/osapiens/reviews)
- **Highest Performer:** [Trace](https://www.g2.com/products/trace-2025-03-07/reviews)
- **Easiest to Use:** [Trace](https://www.g2.com/products/trace-2025-03-07/reviews)
- **Top Trending:** [osapiens](https://www.g2.com/products/osapiens/reviews)
- **Best Free Software:** [Energy Elephant](https://www.g2.com/products/energy-elephant/reviews)


---

**Sponsored**

### carbmee EIS

Carbmee Environmental Intelligence System (EIS) is a sophisticated AI-driven Environmental Intelligence platform designed to give you full control over the E in ESG, managed with the rigor of ERP. Make emissions and environmental impact traceable, auditable and actionable with AI-powered scenario planning, the most flexible data foundation, and superior supplier collaboration. This software solution focuses on creating a resilient, low-carbon value chain, enabling businesses to implement long-term strategies that align with sustainability goals. By leveraging advanced automation, supplier collaboration and the most granular data doundation, Carbmee EIS provides rapid insights that empower organizations to make informed decisions regarding their environmental impact. Targeted primarily at businesses aiming to enhance their sustainability practices, Carbmee EIS addresses a variety of use cases essential for effective carbon management. These include comprehensive tracking of Scope 1, 2, and 3 emissions, which encompass direct and indirect emissions from operations, energy consumption, and supply chain activities. The platform also facilitates the calculation of product carbon footprints, enabling companies to understand the environmental impact of their products throughout their lifecycle. Additionally, it supports supply chain emissions management, ensuring that organizations can engage and onboard suppliers who align with their sustainability objectives. Key features of Carbmee EIS include AI-driven reporting and analysis, which streamline the process of emissions reduction planning. This functionality allows users to identify areas for improvement and develop targeted strategies for lowering their carbon footprint. The platform also extends its capabilities to broader Environmental (ESG) management, covering aspects such as waste management, recycling, repairability, renewable energy, and ecodesign. By offering a holistic approach to sustainability, Carbmee EIS helps businesses not only achieve compliance with regulations like the Carbon Border Adjustment Mechanism (CBAM), Corporate Sustainability Reporting Directive (CSRD), and European Union Deforestation Regulation (EUDR) but also future-proof their operations in an increasingly eco-conscious market. Founded in Berlin in 2021, Carbmee has rapidly established a global presence among industry leaders, reflecting its commitment to fostering sustainable business practices. By utilizing Carbmee EIS, enterprises can unlock significant reductions in emissions at scale, ultimately contributing to the creation of a net-zero enterprise. This platform is not just a tool for compliance; it is a strategic partner in building a sustainable future, ensuring that businesses are well-equipped to navigate the complexities of environmental responsibility in the modern economy.



[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list&secure%5Bcategory_id%5D=1008103&secure%5Bchosen_at%5D=2026-07-12T15%3A11%3A32Z&secure%5Bdisplayable_resource_id%5D=1008103&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=page_category&secure%5Bplacement_resource_ids%5D%5B%5D=1008103&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1240642&secure%5Bresource_id%5D=1008103&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fcarbon-accounting%3Fpage%3D5&secure%5Btoken%5D=0feac41d1cbb424441510b68e6c6693ae5cb10fdf05cceb85ff54e3bc10f1f37&secure%5Burl%5D=https%3A%2F%2Fwww.carbmee.com%2F&secure%5Burl_type%5D=custom_url)

---

## What Are the Top-Rated Carbon Accounting Software Products in 2026?
### 1. [Gaia Carbon Accounting](https://www.g2.com/products/gaia-carbon-accounting/reviews)
Gaia Carbon Accounting empowers organisations to accurately measure, manage, and report their carbon footprint, aligning with global sustainability standards. As businesses face increasing pressure to reduce greenhouse gas emissions, our AI-powered software offers a comprehensive solution that integrates seamlessly with existing systems, such as Xero, NetSuite and Quickbooks.



**Who Is the Company Behind Gaia Carbon Accounting?**

- **Seller:** [Gaia Technologies Ltd](https://www.g2.com/sellers/gaia-technologies-ltd)
- **HQ Location:** N/A
- **LinkedIn® Page:** https://www.linkedin.com/company/No-Linkedin-Presence-Added-Intentionally-By-DataOps (1 employees on LinkedIn®)






### 2. [Global Climate Initiatives](https://www.g2.com/products/global-climate-initiatives/reviews)
Global Climate Initiatives (GCI) empowers organizations to measure, track, and reduce their carbon footprint, fostering impactful decarbonization strategies through deep collaboration with suppliers. Through its innovative Decarbo'Supply® module, GCI tackles Scope 3 emissions by onboarding platform suppliers' customers to join their sustainable journey. It provides them with the essential tools and support to accurately calculate their Product Carbon Footprint (PCF) in alignment with ISO 14067, the GHG Protocol, and WBCSD Pathfinder standards. GCI has already been adopted by hundreds of customers, including some of the world's largest companies and public administrations (https://globalclimateinitiatives.com/en/customer-testimonials). Global Climate Initiatives gathers 150 passionate experts, each dedicated to advancing CSR and sustainable development skills for a brighter, more sustainable future (https://globalclimateinitiatives.com/en/our-network-of-experts).



**Who Is the Company Behind Global Climate Initiatives?**

- **Seller:** [Global Climate Initiatives](https://www.g2.com/sellers/global-climate-initiatives)
- **Year Founded:** 2012
- **HQ Location:** Paris, FR
- **LinkedIn® Page:** https://www.linkedin.com/company/global-climate-initiatives (44 employees on LinkedIn®)






### 3. [Gravity Energy and Carbon Management](https://www.g2.com/products/gravity-energy-and-carbon-management/reviews)
Gravity is an end-to-end carbon accounting and decarbonization platform. Customers can use Gravity to automate GHG measurement, streamline supplier engagement with powerful toolkits, and share financial-grade reporting to regulators, customers, or industry frameworks. However, Gravity also goes beyond carbon reporting. Using its unique services marketplace and project management tools, customers can identify and execute energy efficiency projects that drive cost savings, reduce business risk, and lower emissions. By pairing white glove service with industry-leading automation, Gravity provides a one-stop-shop for carbon and energy management for customers of all sizes and across industries, but particularly those with complex value chains or physical operations.



**Who Is the Company Behind Gravity Energy and Carbon Management?**

- **Seller:** [Gravity](https://www.g2.com/sellers/gravity-9bfd584f-a9d7-460e-9504-ed78c5f38eb5)
- **LinkedIn® Page:** https://www.linkedin.com/company/gravityclimate (1 employees on LinkedIn®)






### 4. [Greenable](https://www.g2.com/products/greenable/reviews)
Mit unserer Software ermöglichen wir produzierenden Unternehmen, den CO₂-Fußabdruck ihrer Produkte softwaregestützt und automatisiert zu berechnen und alle Nachhaltigkeitsdaten zentral zu verwalten – ein entscheidender Schritt hin zum Digitalen Produktpass, der ab 2027 Pflicht wird.



**Who Is the Company Behind Greenable?**

- **Seller:** [greenable](https://www.g2.com/sellers/greenable)
- **Year Founded:** 2022
- **HQ Location:** Kaiserslautern, DE
- **LinkedIn® Page:** https://www.linkedin.com/company/greenabletech/ (6 employees on LinkedIn®)






### 5. [GRITS](https://www.g2.com/products/grits/reviews)
GRITS is an easy-to-use platform for tracking carbon, energy, financial, waste and water data at the project level. The new GRITS Goals capabilities also allow users to build scenarios to calculate the business case of reaching different carbon reduction, energy efficiency or other resource conservation goals over years or even decades. Very helpful for climate action planning or developing an energy master plan. GRITS training can be completed in under an hour for even non-technical users. GRITS 1.0 was originally launched in 2014 and GRITS 4.0 now has more than 900 institutions as users across all 50 US states, Canada, Australia, New Zealand and the United Kingdom.



**Who Is the Company Behind GRITS?**

- **Seller:** [Sustainable Endowments Institute](https://www.g2.com/sellers/sustainable-endowments-institute)
- **Year Founded:** 2005
- **HQ Location:** Boston, US
- **LinkedIn® Page:** https://www.linkedin.com/company/sustainable-endowments-institute/ (9 employees on LinkedIn®)






### 6. [HowGood](https://www.g2.com/products/howgood/reviews)
HowGood’s data helps consumers and enterprises make the right environmental sustainability and social responsibility decisions.



**Who Is the Company Behind HowGood?**

- **Seller:** [HowGood](https://www.g2.com/sellers/howgood)
- **Year Founded:** 2007
- **HQ Location:** Stone Ridge, US
- **LinkedIn® Page:** https://www.linkedin.com/company/580812 (56 employees on LinkedIn®)






### 7. [ImpactOS](https://www.g2.com/products/impactos/reviews)
ImpactOS is an easy, fast and free solution to document your real emissions – no expertise required. Additionally, ImpactOS enables large corporations to track sustainability data from all supply chains going as deep as scope 3 emissions. At ImpactOS our mission is to turn sustainability into a competitive advantage, without having to pay an arm and a leg.



**Who Is the Company Behind ImpactOS?**

- **Seller:** [AskKauko Oy](https://www.g2.com/sellers/askkauko-oy)
- **Year Founded:** 2015
- **HQ Location:** Helsinki, FI
- **LinkedIn® Page:** https://linkedin.com/company/askkauko-com (17 employees on LinkedIn®)






### 8. [Kabaun](https://www.g2.com/products/kabaun/reviews)
Kabaun is an open-source and open-data carbon impact analytical solution. Our mission is simple: to support companies in their ecological transition by allowing them to easily and accurately measure, analyze and reduce their carbon emissions.



**Who Is the Company Behind Kabaun?**

- **Seller:** [Kabaun](https://www.g2.com/sellers/kabaun)
- **Year Founded:** 2021
- **HQ Location:** Paris, FR
- **LinkedIn® Page:** https://www.linkedin.com/company/kabaun/ (8 employees on LinkedIn®)






### 9. [KlimAPI](https://www.g2.com/products/klimapi/reviews)
Calculate and offset CO2 emissions as they occur. We offer an out-of-the-box 360-degree API-first solution to make your business more sustainable. - Rapidly fast API - Get instant calculation results - Receive offers to offset your emissions - Offset immediately with individual certificates Perfect for logistics, travel platforms, banking products, e-commerce businesses, car rental & sharing, ...



**Who Is the Company Behind KlimAPI?**

- **Seller:** [Klimahelden](https://www.g2.com/sellers/klimahelden)
- **HQ Location:** N/A
- **LinkedIn® Page:** https://www.linkedin.com/company/No-Linkedin-Presence-Added-Intentionally-By-DataOps (1 employees on LinkedIn®)






### 10. [Locus](https://www.g2.com/products/locus-technologies-locus/reviews)
Locus Technologies is the only scientist-driven software company at the nexus of analytical and field data management, Environmental, Health, and Safety (EHS) compliance, ESG, and water data management. Locus software manages air, water, waste, energy, emissions, site, and incident data within a configurable platform for risk mitigation and regulatory reporting. Locus Technologies develops robust, cloud-native software for EHS compliance, ESG reporting and sustainability disclosures, environmental data management, and water quality analysis and monitoring. Our ecosystem of 30+ pre-built applications include air quality data management, water data management, waste management, refrigerant management, sustainable construction, and safety/incident management. As a metadata-driven multitenant platform, Locus is also the most configurable environmental software available, empowering clients to tailor Locus technology to very specific use cases or build their own apps on the platform. Our company and products are audited every 12 months to maintain SOC 1 Type 2 and SOC 2 Type 2 third-party attestations. Locus applications feature robust tools for mobile data collection, environmental sample planning, IoT and smart sensor integrations, permit tracking, tasks and workflow, data visualization, GIS mapping, mandatory and voluntary reporting frameworks, and much more. When the health of people, profits, brands, and the planet are on the line, there’s no margin of error or room for doubt. That’s why Locus tackles the most consequential engagements – where accuracy and credibility cannot be compromised. Our software supports many of the largest energy, chemical, manufacturing, agriculture, and construction companies, as well as government and utilities organizations. Locus Technologies was founded in 1997 and is headquartered in California’s Silicon Valley.



**Who Is the Company Behind Locus?**

- **Seller:** [Locus Technologies](https://www.g2.com/sellers/locus-technologies)
- **Year Founded:** 1997
- **HQ Location:** Mountain View, California, United States
- **LinkedIn® Page:** https://www.linkedin.com/company/locus-technologies (95 employees on LinkedIn®)






### 11. [Lythouse](https://www.g2.com/products/lythouse/reviews)
Lythouse is a ESG Reporting Software built on the legacy of Zycus. It is a dedicated one-stop hub for comprehensive ESG solutions. Lythouse provides the convenience of a single platform offering a suite of features, including: 1. Carbon Analyzer: Granular emissions visibility delivers accounting accuracy to the max 2. ESG Report Studio: Ready-to-use reporting with 100% coverage of global frameworks 3. ESG Goal Navigator: CSOs’ very own partner in striving for sustainability excellence 4. Green Supplier Network: Collaboration space for suppliers to drive sustainable supply chain



**Who Is the Company Behind Lythouse?**

- **Seller:** [Lythouse](https://www.g2.com/sellers/lythouse)
- **Year Founded:** 2018
- **HQ Location:** Rosemont IL, US
- **LinkedIn® Page:** https://www.linkedin.com/company/lythouseesg/ (14 employees on LinkedIn®)






### 12. [Mavarick](https://www.g2.com/products/mavarick/reviews)
Mavarick AI helps manufacturers take control of their supply chain emissions, with a focus on Scope 3.1 (purchased goods & services) and Scope 3.4 (upstream transport & distribution). Our platform uses AI and automation to transform fragmented supply chain data into auditable, decision-ready insights. Key features include: End-to-end data automation – Connects with ERPs, PLMs, and supplier systems to ingest, clean, and structure emissions data. AI-powered supplier engagement – Automates outreach, streamlines data requests, and validates quality at scale. Actionable insights – Identify greener suppliers, smarter logistics, and cost-saving opportunities. Regulatory compliance – Stay ahead of CSRD, CSDDD, and other evolving frameworks. Unlike generic carbon accounting tools, Mavarick is purpose-built for manufacturers. Our AI fills data gaps, flags anomalies, and recommends next steps, helping teams reduce reporting burdens while unlocking real ROI. Trusted by enterprise leaders like Volkswagen, Mavarick empowers procurement, sustainability, and supply chain teams to scale sustainability across complex supplier networks.



**Who Is the Company Behind Mavarick?**

- **Seller:** [Mavarick](https://www.g2.com/sellers/mavarick)
- **Year Founded:** 2022
- **HQ Location:** London, GB
- **LinkedIn® Page:** https://www.linkedin.com/company/mavarickai (17 employees on LinkedIn®)






### 13. [Normative](https://www.g2.com/products/normative/reviews)
Normative is a carbon management platform that empowers organizations to turn carbon data into smart sustainability actions. Automated data ingestion and AI-driven categorization reduces manual effort and improves reporting consistency, while scientifically vetted calculations across scopes 1, 2, and 3, ensure audit-readiness. Access to verified supplier data via the Carbon Network and expert guidance from GHGP-certified climate strategists mean Normative’s combined offering helps teams simplify reporting, understand where to act, and drive measurable emissions reductions with confidence. Trusted by 300+ companies, with a 100% audit pass rate and a 100% SBTi submission approval rate.



**Who Is the Company Behind Normative?**

- **Seller:** [Normative](https://www.g2.com/sellers/normative)
- **Year Founded:** 2014
- **HQ Location:** Stockholm, SE
- **LinkedIn® Page:** https://www.linkedin.com/company/normative.io/ (154 employees on LinkedIn®)






### 14. [nZero Carbon Management](https://www.g2.com/products/nzero-carbon-management/reviews)
nZero is a 24/7 carbon management platform that gives companies, cities and communities the accurate emissions data they need to reach net zero and make smart decisions that benefit the health of the planet. Unlike other carbon management offerings who rely on third-party data and opaque averages, nZero gathers accurate, first-party, contextual data into a comprehensive view, making it simple for organizations to pinpoint energy opportunities within their operations, easily implement carbon reduction actions, and spend smarter along the way.



**Who Is the Company Behind nZero Carbon Management?**

- **Seller:** [nZero](https://www.g2.com/sellers/nzero)
- **HQ Location:** Reno, US
- **LinkedIn® Page:** https://www.linkedin.com/company/nzerocarbonmanagement (31 employees on LinkedIn®)






### 15. [OxygenIT](https://www.g2.com/products/oxygenit/reviews)
OxygenIT - developed by ScaleDynamics is a solution that helps companies and organization include carbon emissions in their IT decision-making. With OxygenIT, IT and CSR teams can work together to: - Measure the carbon emissions of your cloud and IT infrastructure. - Get quantified actionable recommendations. - Compare scenarios to make informed decisions. - Predict the impact of your carbon reduction actions. - Meet CSRD regulation and reporting needs.


**Average Rating:** 4.8/5.0
**Total Reviews:** 6

**Who Is the Company Behind OxygenIT?**

- **Seller:** [OxygenIT](https://www.g2.com/sellers/oxygenit)
- **Year Founded:** 2018
- **HQ Location:** Cesson-Sévigné, FR
- **LinkedIn® Page:** https://www.linkedin.com/company/scaledynamics/ (12 employees on LinkedIn®)

**Who Uses This Product?**
- **Top Industries:** Information Technology and Services
- **Company Size:** 83% Enterprise, 17% Small-Business



#### What Are Recent G2 Reviews of OxygenIT?

**"[Unique container as a service platform](https://www.g2.com/survey_responses/oxygenit-review-9727647)"**

**Rating:** 5.0/5.0 stars
*— Nishika B.*

[Read full review](https://www.g2.com/survey_responses/oxygenit-review-9727647)

---

**"[Efficient Cloud Computing Beast](https://www.g2.com/survey_responses/oxygenit-review-9767377)"**

**Rating:** 4.5/5.0 stars
*— Rutuja K.*

[Read full review](https://www.g2.com/survey_responses/oxygenit-review-9767377)

---



### 16. [Pathzero](https://www.g2.com/products/pathzero-pathzero/reviews)
The transition to a low-carbon economy is underway and accelerating globally. Greenhouse gas emission reduction targets are now being set by large companies like Microsoft and Amazon. A growing number of cities, states and countries are also committing to net zero emissions.



**Who Is the Company Behind Pathzero?**

- **Seller:** [Pathzero](https://www.g2.com/sellers/pathzero)
- **Year Founded:** 2020
- **HQ Location:** Sydney, AU
- **LinkedIn® Page:** https://www.linkedin.com/company/pathzero/ (18 employees on LinkedIn®)






### 17. [Pawprint](https://www.g2.com/products/pawprint/reviews)
Pawprint is a Climate Action Platform that allows companies to accelerate their journey to net zero and align other business goals by engaging their employees.



**Who Is the Company Behind Pawprint?**

- **Seller:** [Pawprint](https://www.g2.com/sellers/pawprint)
- **HQ Location:** N/A
- **LinkedIn® Page:** https://www.linkedin.com/company/No-Linkedin-Presence-Added-Intentionally-By-DataOps (1 employees on LinkedIn®)






### 18. [Plan A](https://www.g2.com/products/plan-a/reviews)
Your data-driven path to sustainability Reach your sustainability goals and improve ESG performance with our comprehensive sustainability software and dedicated team of carbon accounting experts.



**Who Is the Company Behind Plan A?**

- **Seller:** [Plan A](https://www.g2.com/sellers/plan-a)
- **Year Founded:** 2017
- **HQ Location:** Berlin, DE
- **Twitter:** @PlanAearth (1,409 Twitter followers)
- **LinkedIn® Page:** http://www.linkedin.com/company/planaearth (271 employees on LinkedIn®)






### 19. [Position Green](https://www.g2.com/products/position-green/reviews)
Position Green enables companies and investors worldwide to thrive and excel in the changing landscape of sustainable business. Our award-winning ESG management software is created by Europe's leading sustainability experts and is specifically designed to automate compliance and help businesses ensure long-term sustainable growth.



**Who Is the Company Behind Position Green?**

- **Seller:** [Position Green](https://www.g2.com/sellers/position-green)
- **Year Founded:** 2015
- **HQ Location:** Malmo, Skåne County, Sweden
- **LinkedIn® Page:** https://www.linkedin.com/company/position-green (363 employees on LinkedIn®)






### 20. [Puro.earth](https://www.g2.com/products/puro-earth/reviews)
Puro.earth is the world's leading crediting platform dedicated to engineered carbon removal, assisting companies globally in their science-based journey to net-zero emissions. Established in 2019, Puro.earth focuses on certifying processes that durably remove carbon dioxide from the atmosphere for a minimum of 100 years. Through the Puro Standard, the first standard solely focused on carbon removal, the platform issues CO₂ Removal Certificates (CORCs to verified suppliers, enabling businesses to offset their residual emissions and support the growth of the carbon removal industry. Key Features and Functionality: - Puro Standard: A comprehensive framework that establishes methodologies for various carbon removal processes, ensuring they meet stringent environmental standards and achieve net-negative emissions. - CO₂ Removal Certificates (CORCs: Digital, tradable certificates issued per metric ton of CO₂ removed, representing verified carbon removal that can be purchased by companies to neutralize their emissions. - Supplier Certification: Rigorous evaluation and certification of carbon removal suppliers to ensure the integrity and effectiveness of their processes. - Puro Registry: A transparent public registry where issued CORCs are recorded, providing traceability and confidence for buyers. - Diverse Carbon Removal Methods: Support for various engineered carbon removal techniques, including biochar production, direct air capture and storage (DACCS, and enhanced rock weathering. Primary Value and User Solutions: Puro.earth addresses the critical need for verifiable and durable carbon removal solutions in the fight against climate change. By providing a standardized and transparent platform for certifying and trading carbon removal credits, Puro.earth enables companies to: - Achieve Net-Zero Goals: Facilitate the offsetting of residual emissions through the purchase of CORCs, aiding in the fulfillment of corporate sustainability commitments. - Support Scalable Carbon Removal: Encourage the development and scaling of effective carbon removal technologies by creating a market for verified carbon credits. - Ensure Environmental Integrity: Rely on a trusted standard that guarantees the permanence and quality of carbon removal efforts, ensuring that investments contribute meaningfully to climate mitigation. By bridging the gap between carbon removal suppliers and corporate buyers, Puro.earth plays a pivotal role in mobilizing the net-negative economy and accelerating global efforts to reverse climate change.



**Who Is the Company Behind Puro.earth?**

- **Seller:** [Nasdaq](https://www.g2.com/sellers/nasdaq)
- **Year Founded:** 1971
- **HQ Location:** New York
- **Twitter:** @Nasdaq (213,584 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/nasdaq/ (8,468 employees on LinkedIn®)
- **Ownership:** NASDAQ: NDAQ






### 21. [Radicle’s Climate Smart Software](https://www.g2.com/products/radicle-s-climate-smart-software/reviews)
Calculate and reduce your carbon footprint equipped with our industry-leading knowledge. Support your new skills with our award-winning Climate Smart software and training program. Create a plan to understand, measure, and reduce emissions (scope 1 2 3) and become Climate Smart or Carbon Neutral Certified.



**Who Is the Company Behind Radicle’s Climate Smart Software?**

- **Seller:** [Radicle](https://www.g2.com/sellers/radicle)
- **HQ Location:** N/A
- **LinkedIn® Page:** https://www.linkedin.com/company/No-Linkedin-Presence-Added-Intentionally-By-DataOps (1 employees on LinkedIn®)






### 22. [Reduzer](https://www.g2.com/products/reduzer/reviews)
Reduzer is a carbon footprint calculation platform built specifically for the construction industry, enabling teams to make informed, data‑driven carbon reduction decisions across all project phases. The tool is used by contractors, architects, developers, and consultants, and includes features such as BIM integration, a verified EPD library, and collaborative workflows. Reduzer helps users understand emissions accurately, compare design choices, and work efficiently toward climate goals. With automated processes and intuitive user flow, the platform allows customers to deliver LCA results quickly and with confidence.



**Who Is the Company Behind Reduzer?**

- **Seller:** [Reduzer](https://www.g2.com/sellers/reduzer)
- **Year Founded:** 2021
- **HQ Location:** Oslo, NO
- **LinkedIn® Page:** https://www.linkedin.com/company/reduzer/ (20 employees on LinkedIn®)






### 23. [Seneca ESG](https://www.g2.com/products/seneca-esg/reviews)
Seneca ESG is a sustainability software company providing ESG data management, analytics, scoring, disclosure/reporting, portfolio analyses, and stewardship for corporates, investment advisors, investment managers, and government entities. We have integrated advanced technologies such as AI/LLM and industry-leading ERP systems to streamline key ESG workflows, highlight similarities across ESG indicators & questions, and identify & score unstructured ESG information.



**Who Is the Company Behind Seneca ESG?**

- **Seller:** [Seneca ESG](https://www.g2.com/sellers/seneca-esg)
- **Year Founded:** 2020
- **HQ Location:** Singapore, SG
- **LinkedIn® Page:** https://www.linkedin.com/company/seneca-esg (29 employees on LinkedIn®)






### 24. [Sievo](https://www.g2.com/products/sievo/reviews)
Sievo provides actionable reliable procurement analytics. ​ Designed for large enterprises with $1B+ in revenue, loved by global companies featuring Mars, Levi’s, and Deutsche Telekom and praised by key analysts, we provide a future-proof solution with 63x ROI.​ We empower Procurement, Finance, IT, and Sustainability teams to overcome their data chaos and capture all insights, drive bottom-line savings, improve ESG performance, and streamline budgeting and forecasting. ​ Sievo goes beyond world-class analytics and dashboards. We help our customers close the data-to-action gap with reliable insights, recommendations, and benchmarks by combining internal, third-party, public and cross-customer data.​ By processing spend data equivalent to over 2% of the world's GDP annually, we enable fast, informed decision-making and deliver industry's highest data quality with end-to-end data accountability. ​ We call it procurement excellence - you can call it Sievo.


**Average Rating:** 4.1/5.0
**Total Reviews:** 9

**Who Is the Company Behind Sievo?**

- **Seller:** [Sievo](https://www.g2.com/sellers/sievo)
- **Year Founded:** 2003
- **HQ Location:** Helsinki, Uusimaa
- **Twitter:** @Sievo (1,157 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/95761 (439 employees on LinkedIn®)

**Who Uses This Product?**
- **Company Size:** 89% Enterprise, 11% Mid-Market


#### What Are Sievo's Pros and Cons?

**Pros:**

- Ease of Use (5 reviews)
- Features (4 reviews)
- Data Management (3 reviews)
- Helpful (3 reviews)
- Insights Analysis (3 reviews)

**Cons:**

- Missing Features (3 reviews)
- Data Management (2 reviews)
- Access Control (1 reviews)
- Bugs (1 reviews)
- Complex Formulas (1 reviews)


### What Do G2 Reviewers Say About Sievo?
*AI-generated summary from verified user reviews*

**Pros:**

- Users find Sievo highly **user-friendly** , enjoying its intuitive design and easy integration with existing systems.
- Users appreciate the **user-friendly and intuitive design** of Sievo, making data access and analytics effortless.
- Users highlight the **simplicity and user-friendliness** of Sievo's data management, empowering data-driven discussions effortlessly.
- Users praise the **user-friendly interface** of Sievo, enabling intuitive data access and effective decision-making.
- Users value the **simplicity and user-friendliness** of Sievo's spend analytics, fostering data-driven initiatives effortlessly.

**Cons:**

- Users highlight the lack of **data visibility controls** and report features, affecting their overall experience with Sievo.
- Users find that **data visibility limitations** hinder broader access and functionality within Sievo for specific cost centers/projects.
- Users desire **better access control** for data visibility based on cost centers or projects for improved functionality.
- Users often face **reclassification errors** in Sievo, making it difficult to recognize important supplier accounts.
- Users find the **complex formulas** in Sievo cumbersome, often opting for external tools for analysis.

#### What Are Recent G2 Reviews of Sievo?

**"[Great tool for spend analytics](https://www.g2.com/survey_responses/sievo-review-10476414)"**

**Rating:** 5.0/5.0 stars
*— Verified User in Chemicals*

[Read full review](https://www.g2.com/survey_responses/sievo-review-10476414)

---

**"[Using Sievo for quick data insights and fact-checks](https://www.g2.com/survey_responses/sievo-review-10486419)"**

**Rating:** 4.5/5.0 stars
*— Oscar C.*

[Read full review](https://www.g2.com/survey_responses/sievo-review-10486419)

---



### 25. [SpheraCloud](https://www.g2.com/products/spheracloud/reviews)
Connect more information and insights across your enterprise with Sphera’s innovative, integrated risk management platform. SpheraCloud® gets the right information to the right people at the right time, but also offers an Integrated Risk Management approach that breaks down information silos.


**Average Rating:** 4.0/5.0
**Total Reviews:** 11

**Who Is the Company Behind SpheraCloud?**

- **Seller:** [Sphera](https://www.g2.com/sellers/sphera)
- **Year Founded:** 2016
- **HQ Location:** Chicago, IL
- **Twitter:** @SpheraSolutions (4,011 Twitter followers)
- **LinkedIn® Page:** https://www.linkedin.com/company/sphera/ (1,449 employees on LinkedIn®)

**Who Uses This Product?**
- **Company Size:** 64% Enterprise, 18% Mid-Market



#### What Are Recent G2 Reviews of SpheraCloud?

**"[Analytics Tool to Improve Work Environment Safety](https://www.g2.com/survey_responses/spheracloud-review-8530635)"**

**Rating:** 4.5/5.0 stars
*— Shallon A.*

[Read full review](https://www.g2.com/survey_responses/spheracloud-review-8530635)

---

**"[A holistic tool for sustainability audits and compliance](https://www.g2.com/survey_responses/spheracloud-review-8553727)"**

**Rating:** 4.5/5.0 stars
*— Verified User in Food & Beverages*

[Read full review](https://www.g2.com/survey_responses/spheracloud-review-8553727)

---




## What Is Carbon Accounting Software?

[Governance, Risk & Compliance Software](https://www.g2.com/categories/governance-risk-compliance)

## What Software Categories Are Similar to Carbon Accounting Software?

- [Sustainability Management Software](https://www.g2.com/categories/sustainability-management)
- [Environmental, Social, and Governance (ESG) Reporting Software](https://www.g2.com/categories/environmental-social-and-governance-esg-reporting)