ZeroMQ core engine in C++, implements ZMTP/3.1
KCP C# version. Thread safe, no alloc at runtime, no pressure on gc
Elegant, modern and asynchronous Telegram MTProto API framework
Ring-Buffer library in C, includes support of multithreading
socket.io library for golang, a realtime application framework
Web framework in Rust
Java client library for Google Maps API Web Services
another java library for 3d rendering without hardware accel.
Highly scalable realtime pub/sub and RPC framework
Asynchronous socket, http(s) (client+server) and websocket library
freeRTOS for Arduino Uno, Goldilocks 1284p & Mega 2560
Search for ZIP code integrated into the services of Post Office
Nginx-Clojure is a Nginx module for embedding Clojure or Java programs
Gev is a lightweight, fast non-blocking TCP network library
aiopg is a library for accessing a PostgreSQL database
Portable C library for proxy client support using standard SOCKETs.
Simple library for asynchronous processing in Emacs
Colorful animations in terminal output
JavaScript fluent validation library
Fast, Simple, Typed ORM for .NET
Asynchronous WebSocket server
EventMachine based WebSocket server
HTTP Client for AS3
Offline storage using a simple but powerful API