All you need to use the RTM api of Slack
GPL-3.0 License
The easiest way to write a Slack bot in Ruby.
mina_slack_notify
Command line utility for following your Slack chat from the terminal
Extensible Slack bot implementation gem suitable with rack, Rails and grape
A sample Slack Command API application written in Ruby using Sinatra.
A simple, extensible Rails forum
omniauth slack openid connect strategy
A super simple, extendable Rack API.
A simple way to build slack interations inside a Rails app.
A Ruby web application framework
CLI Downloader for Slack custom emoji
Fast and simple webhook delivery microservice for Ruby.
Definitely the best way to make Bots on Facebook Messenger with Ruby
Framework agnostic REST / JSON-RPC API implementation (Ruby lang)