Compare software

Apollo SandboxYaak
Free

Sandbox is free to use.

 Freemium

Yaak is MIT licensed and free to build and use. Development is funded by…

Web Windows, macOS, Linux
  • Nothing to install, runs in the browser
  • Works against any GraphQL endpoint
  • Requests are stored as files on your machine, so a git repository is the shared collection
  • REST, GraphQL, gRPC, WebSocket and Server-Sent Events in one client
  • GraphQL only
  • Proprietary and tied to Apollo's hosted service
  • A much younger project than Postman, with a smaller community
  • No hosted collaboration features if that is what you actually want
Web application Downloadable app
Closed source Open source
License not stated License: MIT
Not stated if an account is needed No account needed
Needs internet Works offline

Checked September 24, 2026

Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.