GitPop
4 candidates

Open source alternatives to Postman

API client for testing, documenting, and sharing HTTP requests. · Postman, Inc.

Pricing: Free for individuals; paid plans from $14/user/mo

Postman is the default for API testing but has gotten heavier over the years. The 2026 open-source replacements split into two camps: local-only clients (Bruno, Insomnia) for developers who want a fast single-file workflow, and full collaboration platforms (Hoppscotch) for teams. The shift away from Postman in 2025-2026 was driven by the 'collections live in your repo' movement — Bruno led this and Hoppscotch followed.

The 4 candidates, ranked by PopScore

  1. #01usebruno/bruno

    Local-first API client that stores collections as plain files in your repo (no cloud sync). The leading 'Postman replacement' for solo developers in 2026.

    GitHub
  2. #02hoppscotch/hoppscotch

    Web-first API client with real-time collaboration. The right pick if you want a Postman-like web UI with team features.

    GitHub
  3. #03Kong/insomnia

    Mature API client with a clean desktop UI. The right pick if you want a traditional Postman-like experience with strong GraphQL support.

    GitHub
  4. #04httpie/cli

    Command-line HTTP client. The right pick if you live in the terminal and want 'curl but readable'.

    GitHub

Related alternatives

Looking for a side-by-side comparison of two open-source projects? The compare matrix has 60+ "X vs Y" pages. Looking for a curated "best of" list for a specific category? See Best AI tools 2026 (and the 7 other category editions).

Best open source alternatives to Postman (2026) · GitPop