Compare software

Insomnia vs grpcui: catalog facts
Insomnia	grpcui
Freemium Free to use, with a free account unlocking most features. Kong sells paid plans for teams…	Free Free and open source under the MIT licence.
Windows, macOS, Linux	Web, Command line
REST, GraphQL, gRPC, WebSockets and Server-Sent Events in one client Local Vault and Git Sync mean the cloud is optional	Browser forms for calling gRPC methods Postman-style workflow for gRPC rather than REST
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	Covers gRPC only, not REST or GraphQL Launched from the command line rather than as a desktop app
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 23, 2026

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