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MacDown 3000 vs ReText: catalog facts
MacDown 3000	ReText
Free Free and open source.	Free Free and open source under the GPL-2.0 or later.
macOS	Linux
Side-by-side live preview GitHub Flavored Markdown support	Handles Markdown, reStructuredText, Textile and AsciiDoc Custom markup support through Python modules
macOS only A focused editor without note organisation or sync	Fewer features than full code editors Project documentation lives mainly in the repository
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.