Fund Prosemirror if you have ever been frustrated by a WYSIWYG editor. Not because Prosemirror will be frustration free but because more effort in this area is necessary to get there. -> insert link to any Contenteditable WYSIWYG editor<p>Fund Prosemirror because you think collaborative rich text editing should not be a technology reserved only for web giants to have and acquire. Firebase/Firepad(acquired), Hackpad(acquired), Appjet/Etherpad(acquired), Wikidocs(acquired)...<p>Fund Prosemirror because Marijn Haverbeke has a good track record with Code Mirror. <a href="https://codemirror.net/" rel="nofollow">https://codemirror.net/</a><p>Fund it because open source shouldn't only be about free as in beer. <a href="http://coderanger.net/funding-foss/" rel="nofollow">http://coderanger.net/funding-foss/</a><p>Fund it because it is an impressive piece of work in its own right and current state. <a href="http://prosemirror.net/demo_collab.html#edit-Example" rel="nofollow">http://prosemirror.net/demo_collab.html#edit-Example</a><p>Fund it because in Marijn's altruistic intentions -- its already on github <a href="https://github.com/ProseMirror/prosemirror" rel="nofollow">https://github.com/ProseMirror/prosemirror</a> to look at, he's asking for only a very small amount of compensation for a ton of work, and he's written incredible blog posts educating everyone. <a href="http://marijnhaverbeke.nl/blog/collaborative-editing.html" rel="nofollow">http://marijnhaverbeke.nl/blog/collaborative-editing.html</a><p>Fund it if only because you have faith in humanity.