Resources for rapid app development/prototyping

[blahah]

Just collecting things in this issue, before organising them into a document later. Eventually I'd like to maintain a full list of the good options in any category, plus a shorter list of the ones I recommend.

In-browser text editors

Markdown

• https://github.com/NextStepWebs/simplemde-markdown-editor

  WYSIWYG

• https://github.com/quilljs/quill/

  Other resource lists

• https://gist.github.com/dypsilon/5819504

[blahah]

have also been collecting in https://github.com/fathomlabs/app_development_tools

Should merge and make a single resource - mini sprint!