API Clients Page 2 of 4

• Send/Cancel/Rerun HTTP request in editor and view response in a separate pane with syntax highlight

Offline-first web HTTP client.

Native desktop app for Windows supports efficient REST and HTTP API testing, fast performance, low resource use, code snippets, custom methods, import/export, and multilingual UI.

Thunder Client is a hand-crafted lightweight Http Client extension for Visual Studio Code. No separate download needed, Just install the extension from VS Code marketplace.

Kreya is a GUI client for gRPC, REST and WebSocket APIs with innovative features for environments, authorizations and more.

A HTTP inspection tool with support for HTTP/2 and HTTP/3. Alternative to Postman.

The modern API client that lives in your terminal.

A cross-platform HTTP client desktop application for testing HTTP and REST APIs, WebSocket, GraphQL (including subscriptions) and gRPC endpoints.

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.

API Tester is the first mobile app to test any type of API on the go. Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, and HTTPS APIs completely for free, on iOS or Android.

Firecamp's GraphQL playground is all in one GraphQL debugging tool which let you debug, collaborate and document your GraphQL APIs within a team for all platform.

Used httpyac CLI tool underneath, which helps you execute _.http and _.rest files. This can be used to quickly execute a single *.http file, but also to execute all files in a folder. httpyac supports HTTP, Rest, GraphQL, WebSocket und gRPC...

All the user-friendliness of our Terminal version, now wrapped up in a sleek graphical interface.

RESTClient can be used to test variety of HTTP communications and RESTful webservices. Friendly GUI, rich functionalities.

A REST client for almost any web service (Firefox and Chrome extension).

HTTP client plugin for Sublime Text with an expansive feature set, modern UX, elegant syntax and first class support for testing.

Native API client for Windows & Linux — collections, environments, OpenAPI import, Git sync, request chaining, and response testing.

If you like the interface of HTTPie but miss the features of curl, curlie is what you are searching for. Curlie is a frontend to curl that adds the ease of use of httpie, without compromising on features and performance.

The Zero Trust API Client - A Secure & Free Alternative to Postman , Insomnia & Thunder Client.

Lama2 defines the human-friendly l2 syntax and CLI for describing and executing APIs. Store your APIs in plain-text files. Collaborate with team using version control (say, git). Run Lama2 directly from VSCode extension. Think of Lama2 as Markdown for APIs.

apiman is an open source API management layer that streamlines repetitive tasks often required when providing an API, such as implementing security, throttling and billing.

Httpiness is aimed to be a simple, straightforward HTTP client which minimizes time to configure, send, reconfigure and resend requests in order to maximize development efficiency.

ATAC is Arguably a Terminal API Client. It is based on well-known clients such as Postman, Insomnia, or even Bruno, but inside your terminal without any specific graphical environment needed.

RestCase is a security-focused API development platform that enables its users to rapidly create secure microservices, mock them in order to start testing, monitor APIs and collaborate on their development and testing.

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...