Markdown Preview for (Neo)vim - Preview markdown on your modern browser with synchronized scrolling and flexible configuration.
vmd - Preview markdown files in a separate window. Markdown is formatted exactly the same as on GitHub.
Previm - Vim plugin for previewing Markdown and Mermaid in browser window.
Marked - Marked takes Markdown text–a simple syntax you can learn in minutes–and turns it into beautiful...
Org mode - Org: an Emacs Mode for Notes, Planning, and Authoring
Typora - A minimal Markdown reading & writing app.