This is an old email... there's been many improvements to both JGit, Java/JVM and other areas of interest.

Shawn and I gave a presentation at the Googleplex not so long ago about JGit [1]. In particular, you may be interested in the 'JGit at Google' section.

There are some cases where JGit is faster than CGit, but the benefits of JGit are that it's easy to embed. There are projects like gitblit and other IDEs that use the library. On top of that, you have crazy folks like NGit [2] who cross compile the library using Sharpen so it can be used by the .NET community...

[1] - https://docs.google.com/present/edit?id=0ATM14GNiXaXfZGZkeHp... [2] - https://github.com/slluis/ngit