I like the best thing about IntelliJ Idea is its effective UI, its plugin feature, and its version control system, including Git, SVN, code refactoring, and multiple line modifications. It supports multiple programming languages Java, Kotlin, and other programming languages due to its intelligent code aid, potent refactoring skills, comprehensive debugger, support for version control systems, and extensive ecosystem of plugins. Overall, IntelliJ IDEA is widely acclaimed for its features that increase productivity, simplicity of use, and potent capabilities.

Super cool code editor, I use it very frequently. It improves the code readability. Easy to debug codes.

Their test configuration is really great! personally, I find it really good because the low effort to configure tests to run against remote environments. Once you configure some env you can keep it and with a click to move between envs. (Using it for running locally smoke test in qa/stg/production envs before deploy the changes)