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Foam vs Markdown Oxide: catalog facts
Foam	Markdown Oxide
Free Free and open source with no subscription.	Free Free and open source under the GPL-3.0 licence.
Windows, macOS, Linux	Windows, Command line
Notes stored as standard Markdown files Wikilinks, backlinks, embeds and graph view	Works inside the editor you already use Notes stay as plain Markdown files
Requires Visual Studio Code No dedicated mobile app	Requires an editor with LSP support and some setup No standalone interface of its own
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

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