How to: Gem Servers
* [Gemfast](https://github.com/gemfast/server) - A drop in replacement for geminabox written in Go.
* [Gem in a box](https://github.com/geminabox/geminabox) - Really simple rubygem hosting.
* [Gemirro](https://github.com/PierreRambaud/gemirro) - Gem to automatically make a rubygems mirror.
* [Gemstash](https://github.com/rubygems/gemstash) - A RubyGems.org cache and private gem server.