Best free all-in-one API tool for indie devs?

Most API tools I’ve used either cost too much or split into too many separate tools (docs here, mock there, test elsewhere).
Trying Apidog recently, and it’s impressive:

  • write tests
  • auto-generate docs
  • run mock servers
  • and collaborate
    All free for small teams.
    Just wondering if more indie devs are using this?