Penflip - Typewrite is a real-time collaborative writing environment with Markdown support, versioning and Dropbox syncing. Alternatives to Penflip for Web, Windows, Mac, Linux, iPhone and more.
Nora - A Notion template that actually solves painful problems of project management in Notion instead of looking beautiful.
Pine - A lightweight, modern macOS markdown editor written in Swift
TabNotes - Markdown notepad in your new tab
EME - Elegant Markdown editor
The Good Workshop - TGW helps experts plan, run, and track UX, CX, Product and innovation workshops, fully automated and straightforward user experience.