Apicat – A Lightweight Offline Postman Alternative
Apicat is the ultimate offline Postman alternative that stores your .http files locally. It’s Git-friendly, open-source, and highly compatible with Postman. Test APIs offline with this powerful free offline API client designed for developers who need a reliable local API testing tool.
In plain words
Apicat is an offline API testing tool designed for developers as an alternative to Postman. It stores API requests in .http files locally, works with Git version control, and maintains compatibility with Postman projects. The open-source tool allows developers to test APIs without an internet connection and can be used free of charge.
written from the facts on this page · September 2026
Does the same job
all alternatives →- RORestfox – Open source lightweight alternative to Postman2022 · restfox.dev · ▲758
Last time I posted this it didn't garner much interest. There have been lots of improvements and fixes since the last release. Quick list of features: - Workspaces - Tabs - Nested Folders - Lots of context menus - Response history - Plugins - Runs fully in the browser and runs offline if necessary - Chrome and Firefox extension to bypass CORS restrictions - Desktop builds for all platforms - GraphQL support - Import collections exported from Postman and Insomnia - Simple user friendly interface I built this because I love Insomnia but wanted a portable version that I could run in the…
- NWNew way to test APIs with OpenAPI and Postman2021 · github.com · ▲80
Testnizer — The offline API clientJul 2026 · testnizer.com · ▲3Offline, open-source API client. Your data never leaves.
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