Alpine, which uses openRC, also has gained quite some traction especially as a base for containers or on small VMS/VPS. All our LX-Zones are also running Alpine.
What programming languages are the applications that you're running on Alpine Linux written in? I tried using Ruby in an Alpine Linux Docker container and it managed to crash reading an environment variable, consequently, I never tried Alpine Linux again (hopefully things are better, but I bet its compatibility isn't great).