Promise based HTTP client for the browser and node.js

Open source API development ecosystem - https://hoppscotch.io (open-source alternative to Postman, Insomnia)

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

Guzzle, an extensible PHP HTTP client

Asynchronous HTTP client/server framework for asyncio and Python

🌐 Human-friendly and powerful HTTP request library for Node.js

🌳 Tiny & elegant JavaScript HTTP client based on the Fetch API

Hurl, run and test HTTP requests with plain text.

Simple HTTP and REST client library for Go

The HTTP client for Vue.js

An easy and powerful Rust HTTP Client

Feign makes writing java http clients easier

Cross-platform internet upload/download manager for HTTP(S), FTP(S), SSH, magnet-link, BitTorrent, m3u8, ed2k, and online videos. WebDAV client, FTP client, SSH client.

An interactive command-line HTTP and API testing client built on top of HTTPie featuring autocomplete, syntax highlighting, and more. https://twitter.com/httpie

A light-weight module that brings the Fetch API to Node.js

The POCO C++ Libraries are powerful cross-platform C++ libraries for building network- and internet-based applications that run on desktop, server, mobile, IoT, and embedded systems.

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern Rest API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

🔥 比libevent/libuv/asio更易用的网络库。A c/c++ network library for developing TCP/UDP/SSL/HTTP/WebSocket/MQTT client/server.

Asynchronous Http and WebSocket Client library for Java