... I send out a list of most interesting libraries and apps in the "Go" section to about 1100 subscribers.
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Siberite is a simple, lightweight, leveldb backed message queue written in Go.
Lightweight message queue in Golang
A simple HTTP message queue written in Go with goleveldb, just like httpsqs written in C with Tokyo Cabinet.
MQ is a simple distributed in-memory message broker
a Go wrapper for SysV Message Queues
a durable message queue system for go based on redis, see also https://github.com/adjust/rmq