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Ideon vs Curio: catalog facts
Ideon	Curio
Freemium Free to self-host under AGPL-3.0; the website also has a pricing page.	Paid Paid app with a free two-week trial.
Web, Self-hosted	macOS
Live embeds from GitHub, GitLab, Gitea and Forgejo Real-time collaboration on one canvas	Notes, files, mind maps, tasks and Kanban boards in one workspace Freeform canvas for placing material anywhere
Requires Docker and PostgreSQL to self-host Young project with a small community	macOS only Paid after the trial period
Self-hosted	Downloadable app
Open source	Closed source
License: AGPL-3.0	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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