Open-source API client from Kong for REST, GraphQL, gRPC and WebSockets, with design, mocking, testing and an MCP client. If it is not working for you, here are 8 apps that do the same job, closest match first.
Built from official pricing pages and app store listings, prices checked 2026-11-01. Not paid to be here.| App | Price | Platforms | Pick it if |
|---|---|---|---|
| Insomnia (the app you have) | Essentials $0/user/month | Mac, Windows, Linux | - |
| Hoppscotch | Free $0 forever | Web, Mac, Windows, Linux | you need it on the web |
| Postman | Free $0/month | Mac, Windows, Linux, Web | you need it on the web |
| Bruno | Open Source $0 | Mac, Windows, Linux | you want it free |
| Zed | Personal $0 forever | Mac, Linux, Windows | you want more power-user features |
| Warp | Free $0/month | Mac, Linux, Windows | you want more power-user features |
| Beekeeper Studio | Community free | Mac, Windows, Linux | you want it free |
| Claude Code | Included in Claude Pro, Max, Ultra, Team Standard and Premium | Everywhere | you need it on Android, iPhone and the web |
| Cursor | Free $0/month | Mac, Windows, Linux, Web, iPhone | you need it on iPhone and the web |
Open-source API client for HTTP, GraphQL, WebSocket and more, in the browser, on desktop, CLI or self-hosted.
Pick it if you need it on the web, you want it free and privacy matters most to you.
API platform for designing, testing, mocking, monitoring and documenting APIs, with agent mode, a CLI and an MCP server.
Pick it if you need it on the web and you run a small business.
Open-source, offline-first API client that stores collections as plain files in your Git repo. No account or cloud sync.
Pick it if you want it free, privacy matters most to you and you need it to work offline.
Fast open-source code editor written in Rust, with parallel AI agents, edit prediction, real-time collaboration and Vim mode.
Pick it if you want more power-user features and you want AI built in.
Modern terminal with built-in coding agents, plus Warp Factories for running fleets of cloud agents.
Pick it if you want more power-user features and you want AI built in.
Modern, easy SQL editor and database manager with a free Community edition and paid Indie, Professional and Business plans.
Pick it if you want it free and you want something simpler.
Anthropic's agentic coding tool that reads your codebase, edits files and runs commands from the terminal, IDE, desktop, web or phone.
Pick it if you need it on Android, iPhone and the web, you want more power-user features and you want AI built in.
AI coding agent and editor from Anysphere that builds, tests and reviews code, with cloud agents, a CLI and a mobile app.
Pick it if you need it on iPhone and the web, you want more power-user features and you want AI built in.
We matched these apps to Insomnia by what they are for, who they suit and where they run, using our research on each app's official website and app store listing. We have not tested them hands-on for this page. Check the price on each app's own site before you buy.