What source control system do you use? GitHub? Bitbucket? Gitlab? Other?

Right now I'm on github -- for about 2 months now. The integration with Visual Studio is simply amazing!

I used to be on bitbucket (mercurial), until they announced they would no longer host it. I tried to convert it to git - even though manually doing it is not very pleasant. But now they have a 2GB limit which I almost reached -- that ended up being a huuuuge no-no for me, because I would clearly reach it in the short term.

So, I've created a new repository on github (could not successfully import the one from bitbucket), and I'm still keeping the old (ported to git) bitbucket repository for historical reasons.

for stuff I/my company (as in the company I own not just one I work for) control first choice is Mercurial repos until now on Bitbucket. Some projects that I’ve forked to fix bugs/enhance are already on GitHub so they live there for now.

I’d prefer to self host them all and just push copies to external locations for the purposes of PRs etc.

We're using GitHub Enterprise (self-hosted)