From Atlassian Software Systems:
FishEye knows everything about your code: search out source code artifacts, integrate with JIRA, and browse commits, files, revisions, or people. FishEye allows you to have repositories in Git, Mercurial, Subversion, or any of the other supported systems. It has a single unified view into source regardless of repository type and one interface to browse and search any supported SCM. Visualize your repositories and commits with a graphical representation of the source. The FishEye Commit Graph delivers changesets in their respective branches using configurable "swimlanes" and key information such as branching and merging. Whether writing a new feature or fixing a bug, FishEye visualizes the current status of a file and what happened to the file in the past. Explore code in your repository on a specific branch or tag, making it easier (especially for DVCS users) to navigate complex repositories and understand how a project has changed over time.