HAProxy is an absolute workhorse. It offers rock-solid stability and handles massive amounts of traffic with remarkably low CPU and memory consumption. Once you understand the configuration structure, the flexibility it offers through ACLs (Access Control Lists) and traffic routing rules is incredibly powerful. It just runs quietly in the background and rarely ever needs to be babysat. Review collected by and hosted on G2.com.

The learning curve can be pretty steep for beginners. The configuration syntax is highly specific, and making a small typo can sometimes be frustrating to debug. Additionally, the open-source version lacks a native, modern GUI, meaning you have to be comfortable doing everything via the command line and config files (unless you upgrade to the Enterprise version). Review collected by and hosted on G2.com.

HAProxy is one of those rare pieces of infrastructure software that you can deploy and essentially forget about — it just works, handles massive traffic with minimal resources, and never surprises you. The combination of a transparent, single-file configuration with powerful features like stick tables, granular health checks, and zero-downtime reloads makes it the gold standard for load balancing. Review collected by and hosted on G2.com.

If I'm being honest, the configuration syntax can feel archaic — it's powerful but has a steep learning curve, and the documentation reads more like a reference manual than a guide, which makes onboarding painful. The lack of a native API for dynamic backend management (without reloads or the Runtime API's limitations) also feels outdated compared to more modern alternatives like Envoy, especially in Kubernetes-native environments where service discovery is constantly in flux. Review collected by and hosted on G2.com.

HAProxy is incredibly reliable and performant as a load balancer and reverse proxy. Its configuration is flexible enough to handle complex routing rules, health checks, and SSL termination. The stats dashboard is great for real-time monitoring, and it integrates well into CI/CD pipelines and containerized environments (Docker, Kubernetes). For high-traffic production setups, it’s hard to beat. Review collected by and hosted on G2.com.

The configuration syntax can be unintuitive for newcomers — it takes time to learn the difference between frontend, backend, and listen blocks. Hot-reloading config without dropping connections requires extra care. Better native UI or an official management dashboard would be a welcome addition compared to the basic stats page. Review collected by and hosted on G2.com.

What I like most about HAProxy is its exceptional performance and reliability. It handles high volumes of traffic with very low latency, making it ideal for production environments where speed and uptime are critical. The configuration is flexible and powerful, allowing fine-grained control over load balancing, routing, and failover strategies.

I also appreciate its strong support for both Layer 4 and Layer 7 load balancing, which makes it versatile for different use cases. The built-in health checks and detailed logging provide excellent visibility into system behavior, helping with monitoring and troubleshooting.

Another standout feature is its stability and maturity—HAProxy has been around for a long time and is widely trusted in the industry. Despite its power, it remains lightweight and efficient, which is a big advantage compared to heavier alternatives. Review collected by and hosted on G2.com.

One of the main drawbacks of HAProxy is its steep learning curve, especially for beginners. The configuration syntax can be complex and not very intuitive at first, which makes initial setup and troubleshooting challenging without prior experience. Review collected by and hosted on G2.com.

Excellent performance and reliability — handles high traffic loads efficiently.

Very flexible configuration, supporting advanced load-balancing algorithms and SSL termination.

Strong security features and detailed logging capabilities.

Open-source and widely supported, with an active community and solid documentation. Review collected by and hosted on G2.com.

Configuration syntax can be complex for beginners.

No built-in graphical interface — management requires manual edits or third-party tools.

Troubleshooting can be time-consuming without prior experience. Review collected by and hosted on G2.com.

What I appreciate most about HAProxy is its reliability and performance. It offers excellent load balancing management and remarkable stability, even under heavy load. Additionally, its configuration flexibility allows for finely tuning the behavior according to specific needs. Review collected by and hosted on G2.com.

What I like a little less about HAProxy is that the configuration can become complex on advanced infrastructures. A good knowledge of the product is often required to avoid subtle errors, especially with ACLs or certain routing options. Moreover, the configuration file syntax, although powerful, is not always intuitive for new users. Review collected by and hosted on G2.com.

One thing I love about it is its performance and flexibility. You can configure it to do pretty much anything like SSL termination, rate limiting, caching, you name it. Furrher, the community is pretty active, so you can find plenty of resources and examples to get you started. Review collected by and hosted on G2.com.

It can be a bit of a pain in terms of configuration syntax. It's powerful, but can be complex if you are new to it. Review collected by and hosted on G2.com.

it's lightweight, fast and easy to setup, and the enterprise fusion plane software is really a complete solution, also the customer support is quick and helpful, this software is our base frontline to the applications in the office so all users use it daily and add the new backends or any new site is easy, much easier on the Enterprise Edition Review collected by and hosted on G2.com.

im currently in a version that doesn't have the proper configuration for some features, but this is fixable with the support team, so rather than that nothing bad Review collected by and hosted on G2.com.

I really appreciate using HAProxy for its outstanding performance and reliability, as it is extremely fast and can manage a high volume of traffic with very little latency. This ability to handle tons of high-volume traffic with minimal latency is crucial for my use cases, which involve continuous or spike-based network traffic. Additionally, I find its security features impressive, with capabilities like a firewall, SSO termination, and rate limiting, all of which enhance the protection of our systems. HAProxy's lightning-fast speed makes it incredibly effective for data transmission in near real-time, handling very high volumes of data transfer effortlessly, which perfectly suits the requirements of my projects. Review collected by and hosted on G2.com.

I find HAProxy to be quite a complex solution, which presents a challenge in terms of the learning curve. Getting up to speed with it requires a lot of patience and time to understand its intricacies thoroughly. Additionally, troubleshooting can be cumbersome due to the multitude of configurations and settings available, necessitating a deep understanding of the internal workings of the software. Setting it up was also not straightforward, and we needed support to establish the complex configurations needed to meet our specific requirements. Review collected by and hosted on G2.com.

I appreciate HAProxy for its robust reverse proxy capabilities, which greatly enhance the protection of my applications, especially the ones that do not natively support TLS. The ability to encrypt data between the application and the end user is a critical feature that ensures my data's security. I find the community support incredibly helpful; whenever I have questions, there is always someone to assist me, highlighting the strong community backing HAProxy enjoys. The initial setup of HAProxy was super easy, making the transition from previous tools hassle-free. This simplicity in setup and operation has made it an excellent choice for my home lab projects. Additionally, my trust in HAProxy increased significantly, particularly after Nginx was sold, positioning HAProxy as a more reliable choice for my needs. Review collected by and hosted on G2.com.

Nothing comes to mind Review collected by and hosted on G2.com.