The real answer is to ask their peers. Developers know how much their teammates contribute. The hard part is giving them reasons to be honest with you. Code

The real answer is to ask their peers. Developers know how much their teammates contribute. The hard part is giving them reasons to be honest with you. Code statistics are fun, but they won't tell you anything real about productivity. That said, running "git blame" (or "cvs annotate" or other equivalent) over the whole code base will tell you whose contributions are still around today.