I don't think that GitHub is the most popular forge because it is _good_. I have never heard anyone say "I use GitHub because it has a good UI", "... has good a

I don't think that GitHub is the most popular forge because it is _good_. I have never heard anyone say "I use GitHub because it has a good UI", "... has good accessibility", "... is well designed", "... I prefer proprietary services" or anything remotely similar. The main reason I hear people say they use GitHub is due to network effect. "It's what everyone else is using", "You'll get more visibility and more contributions" or "My employer forces us to use it". Essentially, the same reasons why Windows is a popular platform; not really technical reasons, mostly business and ecosystem factors driving people towards it. Sure, GitHub was* better than the alternative in its initial days. But things have changed in the last decade. GH has continuously declined while alternatives have surfaced and improved dramatically. Personally, it pisses me that GitHub presents itself as "an open source hub", when it is a proprietary, hosted, service.