FastAPI vs Ruby on Rails
Both show up at 3 of the 252 companies we track. None have both.
Counts come from DNS, response headers, page source and public job posts; a tool named in a single job post is not counted. They show adoption among companies developers look up, not market share. There is no signed verdict for this pair yet.
FastAPI
3
companies (1% of those tracked)
Only FastAPI
3 companies
Usually paired with
Cloudflare (3), Python (3), TypeScript (3), Kubernetes (3), Amazon Web Services (3)
Ruby on Rails
3
companies (1% of those tracked)
Only Ruby on Rails
3 companies
Usually paired with
Python (3), Amazon Web Services (3)