Github, Airbnb, Shopify, Stripe, Basecamp, Instacart, Zendesk, Square, and others seem to be staying online, too.
I've written more about my Ruby opinions here: https://www.contraption.co/rails-versus-nextjs/
(Discussed on HN here: https://news.ycombinator.com/item?id=43130546 )
Ruby is effectively Rails. Something about this has always bothered me because I don't like ruby and it gets SOO much praise from users. Which all almost universally happen to be using Rails. I've never used rails so I could not say why authoritatively. I did find someone recently on here that talked about it and mentioned that Rails is steeped in "magic". That it is unbeatable for a single person founder to create a project of any size. The problem is all that "magic" becomes a huge point of contention/confusion/friction when non rails zealots get involved, which is basically everyone.
Or to be more to the point Ruby and rails has a very specific use case and that use case has nothing to do with the application you are building rather the type and size of Team you are assembling.
To me its just a more obscure Python with a much smaller more enthusiastic user base.
Rails and Ruby on the other hand offers one of the best ecosystems and a lot of stability
Please avoid comments like this on HN, and make an effort to observe the guidelines.
I stay away from tools written in Ruby. They get abandoned quickly and depending on them becomes a nightmare afterwards.