Fast and low latency asynchronous socket server & client C++ library
Cross-platform asynchronous I/O
A stream multiplexing library for Golang with minimal memory usage
nanomsg library
Development framework based on message driven provided
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Gev is a lightweight, fast non-blocking TCP network library
Portable C library for proxy client support using standard SOCKETs.
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A simple, non-blocking, NIO-based, TCP socket API for Java