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

Fast and extensible multi-platform HTTP/1-2-3 web server with automatic HTTPS

A simple, yet elegant, HTTP library.

Updated list of public BitTorrent trackers

The java implementation of Apache Dubbo. An RPC and microservice framework.

An interactive TLS-capable intercepting HTTP proxy for penetration testers and software developers.

A command line tool and library for transferring data with URL syntax, supporting DICT, FILE, FTP, FTPS, GOPHER, GOPHERS, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, MQTT, POP3, POP3S, RTMP, RTMPS, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET, TFTP, WS and WSS. libcurl offers a myriad of powerful features

aria2 is a lightweight multi-protocol & multi-source, cross platform download utility operated in command-line. It supports HTTP/HTTPS, FTP, SFTP, BitTorrent and Metalink.

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

一款轻量级、高性能、功能强大的内网穿透代理服务器。支持tcp、udp、socks5、http等几乎所有流量转发，可用来访问内网网站、本地支付接口调试、ssh访问、远程桌面，内网dns解析、内网socks5代理等等……，并带有功能强大的web管理端。a lightweight, high-performance, powerful intranet penetration proxy server, with a powerful web management terminal.

🍬A set of tools that keep Java sweet.

Write scalable load tests in plain Python 🚗💨

💧 A server-side Swift HTTP web framework.

HTTP load testing tool and library. It's over 9000!

REST API for any Postgres database

Your ultimate Go microservices framework for the cloud-native era.

Python ProxyPool for web spider

Package gorilla/mux is a powerful HTTP router and URL matcher for building Go web servers with 🦍

lightweight, idiomatic and composable router for building Go HTTP services

Simple, secure & standards compliant web server for the most demanding of applications