Annict.com
anime website
anime website
customer feedback tool
approval process automation
manage a conference CFP
open-source crowdfunding platform
Fulcrum project planning tool fork
full-featured live chat, support, and marketing platform
customer engagement platform
circuit simulator
digital spaces
connect vaccinations with those who need to be vaccinated
image annotation
a good-enough SMTP server so you can ditch SMTP providers
taggable image board
database of police abuse cases against people of color
FabLab management tool
free market place in the hand of the users
the platform that powers dev.to
theatrical production management
self hosted Git management
social bookmarking and knowledge-sharing
simple and elegant support system
Your code, always in style.
kitsu.io API server
local food management stuff
a multisite CMS with liquid templating
submission and grading for student assignments
distributed, interconnected microblogging
solution for universities to manage all the complex procedures of a university online
open database for farming and gardening knowledge
project management system
Beautifully Simple Billing Software
endurance event data management
archives of fanworks, including fanfic, fanart, and fan vids
multimedia storytelling
API to support user-defined research projects
Rails performance monitoring, plus CI
planning alerts for Australians
everything you need for an online school
the RailsDevs.com board
defunct website of a recipe site
The Ruby community's gem hosting service
plugin-based CMS
flight analysis and competition scoring
another CMS
social tagging for academics
geostorytelling
translation and localization management
time banking system
API for va.gov
video game library tracking
note-taking, knowledge management, and wiki
enterprise-ready helpdesk and customer support system