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Insomnia vs Apipost: catalog facts
Insomnia	Apipost
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Freemium The public SaaS version is free; private on-premises deployment is a paid option through…
Windows, macOS, Linux	macOS, Web
REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional	Supports HTTP, gRPC, WebSocket and Socket.IO debugging Compatible with Postman scripts
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	Site and documentation are mainly in Chinese Private deployment requires contacting sales
Downloadable app	Downloadable app, Web application
Open source	Closed source
License: Apache-2.0	License not stated
No account needed	Not stated if an account is needed
Works offline	Works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 1, 2026

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