Realtime application framework (Node.JS server)
A Socket.IO client library for Java
A 100% native C# implementation of ZeroMQ for .NET
A glib-like multi-platform c library
A client library to multiplex connections from and to iOS devices
Socket-based TS/JavaScript API for WhatsApp Web
An asynchronous event driven PHP socket framework
Socket.IO-client for iOS/OS X
Fast and low latency asynchronous socket server & client C++ library
A C++ header-only HTTP/HTTPS server and client library
nanomsg library
A modern I/O library for Android, Java, and Kotlin Multiplatform
A powerful server and network library, including coroutine
Slack API in Go - community-maintained fork
A go-style coroutine library in C++11 and more
A stream multiplexing library for Golang with minimal memory usage
A Python library for the Docker Engine API
Easy to use cryptographic framework for data protection
Cross-platform asynchronous I/O
Convenience sockets library for FreeBSD & GNU/Linux
Coroutine-based concurrency library for PHP
common java utility library
API for Password Manager Daemon (pwmd)
Cross-platform C++ library for use as a default application framework.
c++/java library for thread support and other useful stuff