Free, open-source alternatives to Postman

API testing clients. Bruno stores collections as plain files in your repo; Hoppscotch runs in the browser.

Category: Developer tools · GitHub data as of Oct 29, 2026 · FAQ · Cost & self-hosting

ProjectWhat it isLicenseGitHub starsLast releaseRuns asHosted plan
Hoppscotch
Active MIT
An API development tool for testing REST, GraphQL and WebSocket APIs, available as web, desktop and CLI apps. MIT 80.7k Sep 30, 2026 Self-hosted web app Yes, from the project
Bruno
Active MIT
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia). MIT 47.9k Oct 22, 2026 Desktop app Not confirmed
Insomnia
Active Apache-2.0
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage. Apache-2.0 40.1k Oct 29, 2026 Desktop app Yes, from the project

Are they still maintained?

3 of 3 Postman alternatives here had a code push or release in the last 180 days (checked Oct 29, 2026).

See every project in the "Is it still maintained?" tracker →

What switching from Postman costs

Postman: current plans and prices are on Postman's pricing page.

AlternativeHow you run itSoftware costWhat you pay for
HoppscotchYour server, or the project's hosted plan$0 (MIT)A server you rent (or own), or the project's paid hosted plan.
BrunoDesktop app$0 (MIT)Nothing to host. Install it on your own device.
InsomniaDesktop app$0 (Apache-2.0)Nothing to host. Install it on your own device.

Self-hosting basics: Hoppscotch needs a server, which can be a small cloud server or a spare machine at home. For a sense of scale, DigitalOcean's price list shows a 1 GiB server at $6/month and 2 GiB at $12/month (checked Oct 29, 2026). Check each project's documented requirements before choosing a size, and budget time for updates and backups.

Don't want to run a server? Hoppscotch and Insomnia offer a hosted plan run by the project itself. Prices change, so check each project's site.

Nothing to host: Bruno and Insomnia run on your own computer.

The options in more detail

Hoppscotch

An API development tool for testing REST, GraphQL and WebSocket APIs, available as web, desktop and CLI apps.

80.7k GitHub stars · MIT · last code push Oct 28, 2026 · GitHub · Website

Bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia).

47.9k GitHub stars · MIT · last code push Oct 29, 2026 · GitHub · Website

Insomnia

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

40.1k GitHub stars · Apache-2.0 · last code push Oct 29, 2026 · GitHub · Website

Postman alternatives: common questions

What is the best open-source alternative to Postman?

It depends on how you use Postman. Of the 3 options here, Hoppscotch is the most followed on GitHub (80.7k stars) and is actively maintained, with its latest release on Sep 30, 2026. If you want an app on your own computer, look at Bruno and Insomnia. If you need something your whole team can log into, look at Hoppscotch.

Is there a self-hosted Postman alternative?

Yes. Hoppscotch runs on a server you control, so your data stays with you. If you'd rather not run a server, Hoppscotch and Insomnia also offer a hosted plan from the people who make them.

Is there a free alternative to Postman?

Yes. Every project on this page can be downloaded and used at no cost from its public repository. Bruno and Insomnia install on your own device, so they cost nothing to run. Server apps are free software, but you pay for the server they run on.

Are these Postman alternatives still maintained?

As of Oct 29, 2026, 3 of 3 had a code push or release in the last 180 days. None are flagged as inactive or archived. We re-check every project weekly.

How much does it cost to switch from Postman?

The software itself is free. Desktop and device apps (Bruno and Insomnia) cost nothing to run. For server apps, the main cost is hosting: as a reference point, DigitalOcean lists a 1 GiB server at $6/month and a 2 GiB server at $12/month (checked Oct 29, 2026). Check each project's documented requirements before choosing a size. The hidden cost is time: moving your data and, for self-hosted apps, keeping up with updates and backups.

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