The Best Postman Alternatives in 2026

1

Bruno

4.1/ 5 overall

Bruno is the open-source darling that a lot of developers are switching to, and its core idea directly answers Postman's biggest gripe. Instead of storing your collections in a cloud account, Bruno saves them as plain text files (its .bru format) right in your project folder — so your API requests live in your git repo, version-controlled and reviewable alongside your code, with no mandatory sign-in or cloud. It's fast, offline-first and genuinely pleasant to use. It's newer, so a few advanced Postman features aren't all there yet. But for developers who want a lightweight, open-source API client that keeps requests local and git-friendly — no account, no cloud lock-in — Bruno is the standout Postman alternative.

2

Apidog

4.1/ 5 overall

Apidog is the pick if you want to replace not just Postman but a whole stack of API tools. It combines API design, testing, automated test runs, mock servers and documentation in one integrated platform — so instead of stitching together Postman, a mocking tool and a docs generator, you do it all in one place, with everything staying in sync. For teams building and maintaining APIs, that integration is a real productivity win. It has a generous free tier and paid plans for teams. It's a bigger, more feature-rich platform than minimalist tools like Bruno. But for teams that want an all-in-one home for the full API lifecycle — design, test, mock and document — Apidog is a powerful, well-rounded Postman alternative.

3

Insomnia

4.0/ 5 overall

Insomnia is the long-established open-source API client and a very capable Postman alternative. It's cleaner and lighter than Postman, with a focused interface for sending REST, GraphQL and gRPC requests, managing environments, and running tests — plus it supports API design and can work with local/git storage so your specs live with your code. It's owned by Kong, which has brought enterprise features for teams. There was some community pushback a while back over account requirements, so it's worth checking the current sign-in behavior for your needs. But for developers who want a clean, mature, open-source-rooted client that's simpler than Postman while still covering REST, GraphQL and gRPC well, Insomnia remains a solid, popular choice.

4

Hoppscotch

4.0/ 5 overall

Hoppscotch is the lightweight, open-source API client that runs in your browser — open the page and you're testing requests in seconds, with nothing to download. It's fast and minimal, covering REST, GraphQL, WebSocket and real-time protocols, and it's completely free and open-source (you can even self-host it for your team). For quick API checks, or for developers who want a no-install, no-account tool they can use anywhere, it's a breath of fresh air after Postman's weight. It's less feature-rich than Postman or Apidog for large, complex workflows and team collaboration. But for a quick, free, open-source client that's always a browser tab away — and that you can self-host if you want — Hoppscotch is excellent.

5

Thunder Client

4.0/ 5 overall

Thunder Client is the pick if you basically live in VS Code. It's an extension that brings API testing right into your editor, so you can fire off requests, manage collections and environments, and check responses without ever leaving your code — no separate app, no context switching. It's lightweight, clean and quick to pick up, and it supports local storage so collections can sit with your project. There's a free version with paid plans for team sync and advanced features. It's naturally less of a standalone powerhouse than Postman or Apidog, and it's tied to VS Code. But for the huge number of developers who work in VS Code all day and want API testing a keystroke away — without opening another tool — Thunder Client is a wonderfully convenient alternative.

6

Yaak

3.9/ 5 overall

Yaak is a newer, modern desktop API client built for developers who want something fast, clean and local-first. It's a native app (built on web tech) that keeps your data on your machine, supports REST, GraphQL and gRPC, works offline, and plays nicely with git so collections can be versioned — hitting many of the same notes as Bruno but with its own polished, modern take. Its core is open-source. Being young, its ecosystem and some advanced/team features are still maturing. But for developers who want a sleek, lightweight, privacy-respecting native client that's local-first and git-friendly — and who like trying modern, well-designed tools — Yaak is a promising, enjoyable Postman alternative worth keeping an eye on.