I'm both a Github user and a Fossil user. I use Fossil for all of my own projects, because the common operations have less friction and everything runs very fas

I'm both a Github user and a Fossil user. I use Fossil for all of my own projects, because the common operations have less friction and everything runs very fast locally. I'm including wiki, ticketing, etc. in the "common operations" even though I'm the only user of those things. I would say if you do all of your development in a corporate or institutional setting where you are a contributor on a distributed team, Github is the best choice and the choice will often already have been made for you anyway. If on the other hand you do a lot of development on your own projects, it could be beneficial to spend a half-day and try out Fossil.