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Cross-platform asynchronous I/O
Fluentd: Unified Logging Layer (project under CNCF)
Ultra fast implementation of asyncio event loop on top of libuv.
ZeroMQ core engine in C++, implements ZMTP/3.0
POCO C++ Libraries - Cross-platform C++ libraries with a network/internet focus.
Snabb: Simple and fast packet networking
Easy HTTP Networking in Swift a NSURLSession wrapper with image caching support
SteamKit2 is a .NET library designed to interoperate with Valve's Steam network. It aims to provide a simple, yet extensible, interface to perform various actions on the network.
Volley library : make everything faster . Its an improvements for Volley by Google for Android https://android.googlesource.com/platform/frameworks/volley
Collection of one-file C/C++ libraries with no dependencies, primarily used for games
An elegant abstraction for REST APIs on iOS / macOS
Official vibe.d development