What is Firecamp used for?

Firecamp is an open-source API client and development platform for testing REST, GraphQL, WebSocket and Socket.IO APIs, positioned as an alternative to Postman and Insomnia. It is a good fit for teams moving off Postman, and testing GraphQL and WebSocket APIs in one tool.

Is Firecamp open source?

Yes. Firecamp is open source under the AGPL-3.0 licence. Its source code is on GitHub at firecamp-dev/firecamp and is written mainly in TypeScript.

Yes. Firecamp is open source, so the software itself is free to use. A managed cloud version is also available.

What is Firecamp an alternative to?

Firecamp is an open-source alternative to Postman, Apifox and Thunder Client. Other open-source alternatives to Postman include Hoppscotch, Bruno and Insomnia.

Is Firecamp actively maintained?

The most recent commit to Firecamp was on 4 March 2026, and the latest release is v3.3.0-beta.3, published on 4 March 2024. The project has 2.6k stars on GitHub.

Firecamp: open-source alternative to Postman, Apifox

About Firecamp

Firecamp is a developer-focused API platform for designing, developing, testing and documenting APIs. It is presented as an open-source alternative to Postman and Insomnia, with an interface inspired by the developer experience of VS Code.

It handles several protocols in one tool, including REST, GraphQL, WebSocket and Socket.IO, with playgrounds for each. Teams can organize requests into collections and work in a shared workspace. Other capabilities include authentication testing, pre-request and test scripts, dynamic variables, and documentation, command-line and CI/CD tooling kept under the same roof.

Desktop applications are available for macOS on Intel and Apple Silicon, Windows and Linux AppImage, and you sign in through firecamp.dev to get started. The code is TypeScript and licensed under AGPL-3.0, and the latest release listed is a beta of version 3.3.

Key features

REST, GraphQL, WebSocket and Socket.IO playgrounds
Shared API collections for teams
Authentication testing options
Pre-request and test scripts
Dynamic variables for reuse
Desktop apps for macOS, Windows and Linux

Good fit for

→Teams moving off Postman
→Testing GraphQL and WebSocket APIs in one tool

Built with: TypeScript; GraphQL
Tags: api-client; postman-alternative; graphql; websocket; socket-io; rest; api-testing; devtools

Firecamp: questions and answers

What is Firecamp used for?: Firecamp is an open-source API client and development platform for testing REST, GraphQL, WebSocket and Socket.IO APIs, positioned as an alternative to Postman and Insomnia. It is a good fit for teams moving off Postman, and testing GraphQL and WebSocket APIs in one tool.
Is Firecamp open source?: Yes. Firecamp is open source under the AGPL-3.0 licence. Its source code is on GitHub at firecamp-dev/firecamp and is written mainly in TypeScript.
Is Firecamp free?: Yes. Firecamp is open source, so the software itself is free to use. A managed cloud version is also available.
What is Firecamp an alternative to?: Firecamp is an open-source alternative to Postman, Apifox and Thunder Client. Other open-source alternatives to Postman include Hoppscotch, Bruno and Insomnia.
Is Firecamp actively maintained?: The most recent commit to Firecamp was on 4 March 2026, and the latest release is v3.3.0-beta.3, published on 4 March 2024. The project has 2.6k stars on GitHub.