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Markdown Oxide vs zk: catalog facts
Markdown Oxide	zk
Free Free and open source under the GPL-3.0 licence.	Free Free to download and use from GitHub.
Windows, Command line	Command line
Works inside the editor you already use Notes stay as plain Markdown files	Notes stay as plain Markdown files Works with any text editor
Requires an editor with LSP support and some setup No standalone interface of its own	Command-line only, no graphical interface Assumes comfort with the terminal
Downloadable app	Downloadable app
Open source	Closed source
License: GPL-3.0	License not stated
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 24, 2026

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