Likewise, non-rails ruby stuff doesn't get nearly enough love. I still use and love Sinatra for small apps quick PoCs/demos/tools. So wonderfully stable and mature, and does what it needs to do.
Check out hanami next time you're starting something new. It's a little more complex than sinatra, but really gels with how I like to architect things. It's basically "what if dry-rb had a web framework"?
Oh yeah! I still have two sites powered by Jekyll, and that thing has been a rock. So refreshing compared to the other worlds of constant churn and breakage