Best Self Hosted Alternatives to Firecamp

Hoppscotch Community Edition is an open-source API development ecosystem for sending, testing, and organizing requests across common API styles and real-time protocols. It provides a fast, lightweight web UI and supports local/offline workflows as well as optional sync and team collaboration features.

Key Features

• API client for REST/HTTP with headers, params, body types, auth, and response inspection
• GraphQL client with schema fetching and documentation support
• Real-time protocol tools: WebSocket, Server-Sent Events (SSE), MQTT, and Socket.IO
• Collections and folders for organizing requests, plus import/export and shareable request links
• Environments and variables, with pre-request scripts and post-request tests
• PWA support with offline capability and low resource usage
• Theming, keyboard shortcuts, and bulk edit for request data

Use Cases

• Developing and debugging APIs during backend and frontend development
• Testing real-time connections (WebSocket/SSE/MQTT/Socket.IO) during integration work
• Maintaining reusable request collections and environment variables for teams or projects

Limitations and Considerations

• Some advanced enterprise capabilities (such as certain SSO features) may be edition-dependent.

Hoppscotch Community Edition is a strong alternative to tools like Postman or Insomnia for developers who want a fast, modern interface and broad protocol support. It is well-suited for both quick ad-hoc requests and structured, repeatable API testing workflows.

Requestly is a local-first API client combined with an HTTP interceptor for capturing, inspecting, and modifying HTTP/HTTPS traffic. It helps developers test APIs, mock backend responses, and override network behavior from a browser extension or desktop app.

Key Features

• REST API client with collections, environments/variables, and request history
• HTTP interception and modification rules for requests and responses
• URL redirects and rewrites (host, query params, map local/remote)
• Modify request/response headers and bodies
• Script injection and resource overriding for web pages
• API mocking with static and dynamic overrides, including GraphQL targeting
• Session recording for capturing and sharing relevant network traffic
• Local workspaces stored on disk, with optional team sync workflows

Use Cases

• Debug and test REST/GraphQL APIs with environment-specific variables
• Mock backend APIs to unblock frontend development and E2E tests
• Redirect traffic between staging/dev/prod endpoints and override scripts/resources

Limitations and Considerations

• Some capabilities depend on where it runs (browser extension vs desktop app) and what traffic can be captured in that environment

Requestly is well-suited for developers who want a Postman-like API client combined with Charles/Fiddler-style interception. It provides practical tooling for request rewriting, API mocking, and repeatable debugging workflows without requiring heavy infrastructure.

Yaade is an open-source, self-hosted, collaborative API development environment. It enables teams to store, organize, and test API work on their own infrastructure, promoting secure collaboration and sharing of API collections.

Key Features

• Self-hosted: data never leaves your own server. (github.com)
• Multi-user: manage users and their permissions. (github.com)
• Persistent: data remains consistent across container or server restarts. (github.com)
• Easy single-file data import / export. (github.com)
• Proxy requests through your browser or through the server. (github.com)
• REST and Websockets with Markdown documentation support. (github.com)
• Scripts: run cron jobs or API-based scripts; execute requests or tests in pure JavaScript. (github.com)
• Import collections from OpenAPI or Postman; export to multiple languages and frameworks. (github.com)
• Dark mode is the default UI experience. (github.com)

Use Cases

• Collaborative API development and testing: teams can share and co-edit API collections and tests in a self-hosted workspace. (github.com)
• OpenAPI/Postman imports and client generation: migrate existing API definitions into Yaade and export to various languages/frameworks. (github.com)
• Secure, on-prem API workbench: run Yaade on your own server with user permissions and persistent data across restarts. (github.com)

Limitations and Considerations

• No hosted cloud instance is described by default; Yaade is built as a self-hosted solution and is typically deployed via Docker. For installation guidance see the official docs. (docs.yaade.io)

Conclusion

Yaade provides a self-hosted, collaborative environment for API development, testing, and documentation. Its emphasis on on-premises data, multi-user access, and OpenAPI/Postman compatibility makes it suitable for teams prioritizing security and shareable API workspaces.