[meshko]

They do already have that tool, you know? https://www.atlassian.com/software/crucible/overview (but I think Upstream has every chance of blowing it out of the water)

[jtsu]

Perhaps you meant Fisheye ? https://www.atlassian.com/software/fisheye/overview

[nevster]

This combines both of them, both source repository viewer (fisheye) and code review (crucible).