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 primarily a web-based Markdown editor with strong collaboration features, making it ideal for users focused on writing and sharing documents. In contrast, Joplin is a versatile open-source note-taking app that emphasizes security and cross-platform support, making it suitable for users who need a comprehensive note management solution.