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Best alternative software

Best Open Source Postman Alternatives

A collaborative platform for API development with tools that allow you to design, simulate, and test APIs more easily.

Postman11 tools

Open-source tools

Showing 11 of 11 curated projects from this topic.

Page 1 of 1

Hoppscotch

Lightweight, fast, and feature-rich API client for developers. Test, debug, and document APIs with ease in a clean, modern interface.

79,066
MIT

Alternative to: Postman

Bruno

A modern, user-friendly API client that simplifies API testing and development with a clean interface and powerful features.

43,426
MIT

Alternative to: Postman

Insomnia

Intuitive API client for REST, GraphQL, and gRPC. Debug, test, and collaborate on APIs with ease across platforms.

38,369
Apache-2.0

Alternative to: Postman

Yaak

A modern API client offering local-only data storage, Git integration, plugin extensibility, and multi-protocol support for developers.

18,514
MIT

Alternative to: Postman

Scalar

Scalar is an open-source tool for building, customizing, and hosting interactive API documentation with OpenAPI support.

14,889
MIT

Alternative to: Postman

Mockoon

Create, run, and share mock REST APIs without coding. Boost productivity with an intuitive interface and powerful features.

8,236
MIT

Alternative to: Postman

Requestly

A powerful browser extension and desktop app for developers to manipulate network requests, debug APIs, and improve web app testing

6,659
Unknown

Alternative to: Postman

HTTPie

Intuitive, user-friendly CLI tool for making HTTP requests, debugging APIs, and testing web services with ease and efficiency.

3,932
BSD-3-Clause

Alternative to: Postman

Firecamp

All-in-one platform for API testing, documentation, and collaboration, simplifying the entire API development lifecycle.

2,593
AGPL-3.0

Alternative to: Postman

Voiden

Offline-first API workspace that unifies specs, docs, tests, and mocks in programmable Markdown blocks. Version control everything in plain text files.

929
Apache-2.0

Alternative to: Postman

Gravitee

Full-lifecycle API management platform that unifies synchronous and asynchronous ecosystems. Manage APIs, event streams, and AI agents with enterprise security and 4x faster gateway performance.

410
Apache-2.0

Alternative to: Postman