The Unsplash license says it all : “All photos published on Unsplash are licensed under Creative Commons Zero which means you can copy, modify, distribute and use the photos for free, including commercial purposes, without asking permission from or providing attribution to the photographer or Unsplash.”
“Staytus is a complete solution for publishing the latest information about any issues with your web applications, networks or services. Along with absolutely beautiful public & admin interfaces, Staytus is a powerful tool for any organization with customers that rely on them to be online 24/7.”
Staytus is build on Ruby and is really easy to install and setup. The latest version offers a nice clean REST API to pull issues, post issues, update issues and change the service status. It has a clean and intuitive admin interface to get you started fast.
It also has theme support, so you can easily make the design your own!
Lita is a chat bot written in Ruby. It connects with your favorite chat service. It uses a plugin system to connect to different chat services and to provide new behavior. The plugin system uses the familiar tools of the Ruby ecosystem: RubyGems and Bundler.