Upsource

Upsource was a code review and repository browsing tool developed by JetBrains. It connected to Git, GitHub, Mercurial, Perforce and Subversion repositories and gave a single web interface to browse code, history and branches.

Reviews could be created for commits, branches or pull requests, with inline discussions, reviewer assignment and review status tracking. Upsource provided code-aware navigation and inspections for Java, Kotlin, JavaScript, PHP and Python, and a plugin let developers take part in reviews from JetBrains IDEs.

Upsource was free for small teams and commercial beyond that. JetBrains stopped selling it on February 1, 2022, and ended its support in January 2023.