Qodo

Qodo, which used to be called CodiumAI, builds tools that check code instead of just writing it. Its review agent looks at pull requests for bugs, risky changes and missing coverage, and it works inside the IDE, the command line and your Git platform. A big part of its pitch is test generation. It reads a function, works out how it should behave and proposes tests, including edge cases people tend to forget. That makes it useful both for review and for shoring up legacy code. There is a free plan for individual developers, plus team and enterprise plans with more control over where code is processed. It suits teams that care about quality gates more than raw speed.