Compare
Firecamp vs Voiden API Client
OpenSource Postman alternative; Voiden adds markdown docs, CI runner and AI-agent support.
FirecampOpenSource alternative to Postman 
Voiden API ClientGit-native. Modular. Made for devs who build.Which to pick
Pick Firecamp if you want…
- All-in-one API testing and collaboration
- OpenSource Postman clone
- Integrations with VSCode or SocketIO (on Firecamp's list, not Voiden API Client's)
Pick Voiden API Client if you want…
- Git-native, markdown-based API design & testing
- Integrations with JavaScript, Python or Shell (on Voiden API Client's list, not Firecamp's)
Side by side
- What it is
- Firecamp:Firecamp is an open-source, VSCode-driven tool for building, testing and collaborating on REST, GraphQL, WebSocket and SocketIO APIs.
- Voiden API Client:Voiden is an open-source, Git-native API client that lets you design, test and document APIs in plain Markdown files.
- Best for
- Firecamp:All-in-one API testing and collaboration
- Voiden API Client:Git-native, markdown-based API design & testing
- Who it’s for
- Firecamp:Developers who need a unified API testing and collaboration platform.
- Voiden API Client:Developers who version-control APIs and need offline, code-centric tooling.
- Pricing
- Firecamp:Open source
- Voiden API Client:Open source
- Open source
- Firecamp:Yes
- Voiden API Client:Yes
- Works with
- Firecamp:VSCode, REST, GraphQL, WebSocket, SocketIO
- Voiden API Client:JavaScript, Python, Shell, REST, WebSocket, gRPC, GraphQL, GitHub Actions
Firecamp features
- VSCode-driven DX. Provides a developer experience integrated with Visual Studio Code.
- End-to-end API testing. Supports testing of REST, GraphQL, WebSocket and SocketIO endpoints.
- API collection collaboration. Teams can share and collaborate on API collections within the platform.
- Unified playgrounds. Create dedicated playgrounds for REST, GraphQL, WebSocket and SocketIO APIs.
- Guest mode. Allows limited testing without an account, with full features unlocked after sign-up.
- Open-source core. Available as an open-source alternative to Postman on GitHub.
Voiden API Client features
- Executable Markdown Docs. Run API requests directly inside Markdown alongside documentation and explanations.
- LEGO-style Request Blocks. Compose requests from reusable blocks (endpoint, headers, auth, params) that are version-controlled as text.
- Multi-Protocol Support. Test REST, WebSocket, gRPC and GraphQL APIs without leaving the tool.
- MCP Agent Integration. Expose requests as AI-agent callable tools and connect Claude, Codex or other MCP assistants.
- CI/CD Runner. Run .void files headlessly in Node.js environments like GitHub Actions or GitLab CI with deterministic exit codes.
- Advanced Auth & Scripts. Built-in OAuth, token, basic auth and pre/post request JavaScript, Python or Shell scripts.
- Rich Media & Format Previews. Preview PDFs, images, videos and handle XML, YAML, JSON payloads directly in responses.
- OpenAPI & Postman Import. Import OpenAPI specs or Postman collections to auto-generate .void files.
Firecamp vs Voiden API Client FAQ
Is Firecamp or Voiden API Client free?+
Yes, both are free and open source.
Is Firecamp or Voiden API Client open source?+
Yes, both are open source: Firecamp (FirecampDev/Firecamp on GitHub) and Voiden API Client (VoidenHQ/feedback on GitHub).
Do Firecamp and Voiden API Client integrate with the same tools?+
Partly. Both list REST, GraphQL and WebSocket. Firecamp also lists VSCode and SocketIO; Voiden API Client also lists JavaScript, Python, Shell, gRPC and 2 more.
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.