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Todoist vs Vikunja: catalog facts
Todoist	Vikunja
Freemium Free plan, with a paid Pro upgrade.	Freemium The open-source task manager is free to self-host. Hosted service and Pro features are…
Web, Browser extension	Self-hosted, Web
Natural-language task entry Custom filters and labels	Offers a server you can run yourself and a hosted option.
Advanced features require Pro Requires an account	Hosted services and Pro features have separate charges.
Downloadable app, Web application, Browser extension	Self-hosted
Closed source	Open source
License not stated	License: AGPL-3.0
Account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 22, 2026

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