... I send out a list of most interesting libraries and apps in the "Go" section to about 1100 subscribers.
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Connection multiplexer for GoLang: serve different services on the same port!
Go support for Google's protocol buffers
A Stable & Secure Tunnel based on KCP with N:M multiplexing and FEC. Available for ARM, MIPS, 386 and AMD64
A fast, well-tested and widely used WebSocket implementation for Go.
gRPC to JSON proxy generator following the gRPC HTTP spec
Protocol Buffers for Go with Gadgets
OpenTracing API for Go
libp2p implementation in Go
The best way to send emails in Go.