Not sure it's a front-end (looks like it's a Perforce front-end to Git), but I believe it's an interface that makes the two work together: http://www.perforce.c

Not sure it's a front-end (looks like it's a Perforce front-end to Git), but I believe it's an interface that makes the two work together: http://www.perforce.com/git-fusion http://www.perforce.com/git-fusion