Get free HTTPS certificates forever from Let's Encrypt
Asynchronous HTTP client/server framework for asyncio and Python
HTTP web server index for Apache httpd, lighttpd and nginx
Lightweight service virtualization/ API simulation / API mocking tool
Powerful, enterprise-ready, open source web server w/ automatic HTTPS
An HTTP inspector for Android & OkHTTP (like Charles but on device)
WireMock.Net is a product for stubbing and mocking web HTTP responses
Hurl, run and test HTTP requests with plain text
A minimal, idiomatic Scala interface for HTTP
Rust HTTP types
TCP/HTTP/UDP/QUIC client/server with Reactor over Netty
Zenko CloudServer open-source Node.js implementation of S3 protocol
Generate Swift client and server code from an OpenAPI document
A high-performance HTTP benchmarking tool
The Functional toolkit for Kotlin HTTP applications
Clojure HTTP server/client library with WebSocket support
Up to 100x Faster FastAPI. JSON-RPC with io_uring, SIMDJSON
Make writing Java http clients easier
Network application framework for protocol servers and clients
Eclipse Jetty - Web Container & Clients - supports HTTP/2, HTTP
C++ parallel computing and asynchronous networking engine
The most advanced tool for HTTP API
An easy to install Apache distribution containing MySQL, PHP, and Perl
True object-oriented Java web framework without NULLs