This is a note-taking app based on GitHub-flavored Markdown, with a simple interface and no proprietary formats, just plain Markdown. Notable allows you to run a search and replace across all your notes with indefinitely nestable tags. It doesn’t use any WYSIWYG editor, Notable is just a pretty front-end vessel for a folder with a simple, clean and weightless structure. Developed by GitHub user Fabio Spampinato, released under the MIT license.