Ruby is a programming language and web server runtime environment used for some IndieWeb projects.
Examples of indieweb community members who are using Ruby on their personal sites:
Generally useful libraries being developed by IndieWeb participants in Ruby.
- microformats2 - a microformats2 parser written in Ruby
- mention-client-ruby - a webmention client written in Ruby
Non-IndieWeb-specific libraries that may still be of interest.
IndieWeb projects built with Ruby:
Ruby does not have PHP's ubiquity, and finding hosting can be a little bit more of a challenge. See web_hosting for more details.