81kActiveWindows · Mac · Linux · In your browserMITFor developers
Hoppscotch is a tool for sending and testing web API requests, available in the browser, as a desktop app, or as a command-line tool. It is aimed at developers and people who work with APIs.
40kActiveWindows · Mac · LinuxApache-2.0For developers
Insomnia is a desktop app for Mac, Windows and Linux for sending requests to, designing, testing and mocking APIs. It is for programmers and IT teams who build or check APIs, and most features need a free account.
2.6kActiveWindows · Mac · LinuxAGPL-3.0For developers
Firecamp is a desktop and web app for sending and testing requests to APIs, the connection points programs use to talk to each other, including REST, GraphQL, WebSocket and Socket.IO. It is aimed at developers and teams who build APIs and want to share request collections.
17kActiveApache-2.0Replaces partlyRuns on your own server
Apache APISIX is a server program that sits in front of web services and directs, limits and secures the API traffic sent to them. It is aimed at engineering teams who run microservices or need to manage many APIs.
2.1kActiveApache-2.0Replaces partlyRuns on your own server
Fusio is a self-hosted platform that turns databases, services and business logic into web APIs, with a developer portal for outside users. It is aimed at developers and companies that want to publish and manage APIs.
1.9kQuiet for a yearMPL-2.0Replaces partlyFor developers
Step CI is a free tool for testing whether web APIs work correctly, using simple YAML or JSON files. It is aimed at developers and teams who want to check their services from a command line or automated pipeline.
For developers · GitHub
None of these match. Try another device.
Before you build
Planning something for an alternative to Postman? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Read the list of open-source alternatives at https://opensourceeverything.org/data/groups/api-tools.json. Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do.
My project or idea:
Here is a list of open-source alternatives to Postman, from Open Source Everything (CC BY-SA 4.0):
- hoppscotch (MIT, https://github.com/hoppscotch/hoppscotch; replaces fully): Hoppscotch is a tool for sending and testing web API requests, available in the browser, as a desktop app, or as a command-line tool. It is aimed at developers and people who work with APIs.
- Insomnia (Apache-2.0, https://github.com/Kong/insomnia; replaces fully): Insomnia is a desktop app for Mac, Windows and Linux for sending requests to, designing, testing and mocking APIs. It is for programmers and IT teams who build or check APIs, and most features need a free account.
- Firecamp (AGPL-3.0, https://github.com/firecamp-dev/firecamp; replaces fully): Firecamp is a desktop and web app for sending and testing requests to APIs, the connection points programs use to talk to each other, including REST, GraphQL, WebSocket and Socket.IO. It is aimed at developers and teams who build APIs and want to share request collections.
- Apache APISIX (Apache-2.0, https://github.com/apache/apisix; replaces partly): Apache APISIX is a server program that sits in front of web services and directs, limits and secures the API traffic sent to them. It is aimed at engineering teams who run microservices or need to manage many APIs.
- Fusio (Apache-2.0, https://github.com/apioo/fusio; replaces partly): Fusio is a self-hosted platform that turns databases, services and business logic into web APIs, with a developer portal for outside users. It is aimed at developers and companies that want to publish and manage APIs.
- Step CI (MPL-2.0, https://github.com/stepci/stepci; replaces partly): Step CI is a free tool for testing whether web APIs work correctly, using simple YAML or JSON files. It is aimed at developers and teams who want to check their services from a command line or automated pipeline.
Compare it with my project or idea below. Tell me which projects overlap, what I could reuse instead of rewriting, and what mine does that none of them do.
My project or idea:
