This is a tool to manually explore and test HTTP REST webservices. Runs queries from a plain-text query sheet, displays results as a pretty-printed XML, JSON and even images.
Platforms
- Mac
- Windows
- Linux
- GNU Emacs
R
Insomnia REST Client Alternatives
Apps similar to Insomnia REST Client include Bruno, which is open source with a free version. Other options are Postman, Yaak, HTTP Toolkit and Hoppscotch. You're spoiled for choice with API Clients like Insomnia REST Client: we list more than 100 alternatives for Windows, Mac, Linux, the web and self-hosting.
Alternatives list
Main goal of this VSCode extension is storing all HTTP request & response data automatically as files in a VSCode workspace.
Platforms
- Mac
- Windows
- Linux
API Test Base is a free, offline-first tool for testing APIs and their side effects — the records an API writes to a database, the messages it publishes to a queue, the downstream services it calls. Test cases are created with a no-code / low-code UI, and the same tests can be...
Cost / License
- Free
- Proprietary
Application typeApplication types
Platforms
- Mac
- Windows
- Docker
- Linux
Visual API testing & load-testing workbench for HTTP, GraphQL, gRPC, WebSocket, SSE, and Kafka — with a workflow designer, API mock server, and CI-ready CLI.
Cost / License
- Free
- Open Source (AGPL-3.0)
Platforms
- Windows
- Mac
- Linux
- Online
United States
ReadMe is a completely customizable and collaborative place for dynamic API and/or product documentation. Users can play around with the API right in the docs, automatically generated from a Swagger / OAS file. It also works as a knowledge base platform.
Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- United States
Api Quest is a desktop application designed for executing HTTP requests, storing them on the local file system, and providing portability. Whether you're a developer, QA or system engineer, this tool offers solution for handling HTTP requests effectively.
Cost / License
- Free
- Proprietary
Application typeApplication types
Platforms
- Windows
- Linux
Slumber is a TUI (terminal user interface) HTTP client. Define, execute, and share configurable HTTP requests.
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Mac
- Linux
- Windows
A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.
Cost / License
- Free
- Open Source (Apache-2.0)
Application type
Platforms
- Mac
- Windows
- Linux
Build, test, and debug your APIs with a self-hosted tool that does what you actually need. Scripts, environments, OAuth 2.0, code generation, and an AI wizard that builds collections from your docs — no account required, no limits.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Windows
- Docker
- Self-Hosted
Hungary
EU
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Keep your http requests in a single file that lives in your projects repo. This app lets you run your http requests from a .http file and includes features like load testing, pre and post request scripts, and request chaining.
Cost / License
- Free
- Open Source
Application type
Platforms
- Mac
- Windows
- United States
Zaku is a native Rust, local-first, open-source API client engineered for speed and productivity.
Cost / License
- Free
- Open Source (AGPL-3.0)
Application type
Platforms
- Mac
- Windows
- Linux
Cost / License
- Free
- Open Source (Apache-2.0)
Application typeApplication types
Platforms
- Python
- BSD
- Linux
- Mac
- Windows
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