StackEdit is a full-featured, open-source Markdown editor based on PageDown, the Markdown library used by Stack Overflow and the other Stack Exchange sites. Developed by Benoit Schweblin
License: Open Source
StackEdit is a more feature-rich markdown editor with real-time collaboration and extensive cloud storage options, making it suitable for team projects, while MarkPad is lightweight and ideal for individual users looking for a simple markdown editing experience.