Extensions Plugins
Pavel Linkesch has developed a jQuery plugin to upload images & embed content (from Twitter, Youtube, Vimeo, etc.) following Medium.com functionality. Check it out at http://orthes.github.io/medium-editor-insert-plugin/
Ionică Bizău has created a Medium Editor extension, named Medium Editor Markdown, to add the functionality to render the HTML into Markdown code. Check it out at https://github.com/IonicaBizau/medium-editor-markdown.
A tables support extension is available at https://github.com/yabwe/medium-editor-tables.
At @jillix, Ionică Bizău developed a Medium Editor extension that allows inserting custom HTML into the editor. Check it out here: https://github.com/jillix/medium-editor-custom-html.
Kasi Chonpimai has created an enhanced placeholder plugin which enables users to add multiple placeholders with specific HTML tags. Check it out here: https://github.com/smiled0g/medium-editor-multi-placeholders-plugin
Patrick Stillhart developed a new and improved way to add buttons to our toolbar. With it you can add HTML or javascript buttons. Check it out at:
https://github.com/arcs-/MediumButton
Tom Chen has built this extension to add mention support that came from Medium 2.0. It also allows users to customize the mention panel for their favor. It's available on npm and an UMD version as well. Check out the demo and source codes on GitHub.
Varun Raj developed an extention that automatically converts ( 1. Space ) to ordered list and ( * Space ) to unordered list if the corresponding base extensions are enabled. https://github.com/varun-raj/medium-editor-autolist
Paul Asselin has created an extension to add handsontable spreadsheets to MediumEditor. Check out the source code on GitHub and the npm package.
Marek Kawczyński has created an extension which adds a button to the toolbar for inserting customize paragraphs into the editor. You can find the project on GitHub and npm