Kotlin vs Ruby
Kotlin shows up at 15 of the 255 companies we track, Ruby at 6. 2 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.
Kotlin
15
companies (6% of those tracked)
Only Kotlin
13 companies, plus 2 with both
Usually paired with
Kubernetes (14), Amazon Web Services (12), React (11), PostgreSQL (11), Stripe (9)