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Altair GraphQL ClientInsomnia
Freemium

The client is free and open source; Altair GraphQL Cloud is an optional hosted service.

 Freemium

Free to use, with a free account unlocking most features. Kong sells paid plans for teams…

Windows, macOS, Linux, Web, Browser extension Windows, macOS, Linux
  • Schema docs search with one-click query generation
  • Environments, pre-request scripts and file uploads
  • REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client
  • Local Vault and Git Sync mean the cloud is optional
  • Focused on GraphQL only, not general REST testing
  • Team sync features rely on the separate cloud service
  • Most features expect an account, even though a Scratch Pad works without one
  • The 2023 move to account-first storage cost it a lot of goodwill
Downloadable app, Browser extension Downloadable app
Open source Open source
License not stated License: Apache-2.0
No account needed No account needed
Not stated if it works offline Works offline

Checked September 23, 2026

Checked September 21, 2026

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