Ask HN: How would you monetize jQuery? Coffeescript? GHC?

If you were developing a new language/library/tool that you wanted to release as open source, and that has no real business being SAAS, how would you try to make a living off of it, or at least support the time you spend? Plain old donate button? Crowdfunding for additional feature development? Restrictive license for commercial use? I'd like to hear about some success stories for such projects, the relationship of the strategy to the type of project, and the results of testing various strategies in the field.