I added 3946.
It would make sense to expand this so that non-github source code repositories could be entered. You'd just have to pre-pend
https://github.com to each entry in column A, and this would allow other sites to be entered.
Edit: FWIW, Gixxy, our founder and first head programmer, set up that github account, and we always keep it up to date -- it's how our programmers sync with each other during build season as well as during off-season. We don't just sync the code the first week of January - this is really our current code, except for individual edits not yet shared to the rest of our team. During each event we are in, we have a "key" laptop for programming, but other than that, we're up to date on github.