rvm (an open source tool for managing your Ruby environment) had a crowd-funding campaign: https://www.bountysource.com/teams/rvm/fundraiser https://www.bountys

rvm (an open source tool for managing your Ruby environment) had a crowd-funding campaign: https://www.bountysource.com/teams/rvm/fundraiser https://www.bountysource.com/teams/rvm/fundraiser They collected all the cash they needed, the maintainer took a break for some time, and now they're working on the next major release.