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cobalt vs Video DownloadHelper: catalog facts
cobalt	Video DownloadHelper
Free The open-source software is available without a license fee.	Freemium A free version is available. A paid licence removes limits and unlocks conversion…
Web, Self-hosted	Browser extension
One paste box, no account, no advertising and no bundled installer Can be self-hosted so downloads do not depend on a public instance	Handles segmented adaptive streams, not just plain video files Recognises media on a very large number of sites
Supported services vary by instance and change over time Public instances are rate limited	Converting and some formats require its separate companion app, and several features are paid Cannot download DRM-protected content
Web application, Self-hosted	Browser extension
Open source	Closed source
License not stated	License not stated
Not stated if an account is 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 22, 2026	Official website Full listing and sources Checked September 22, 2026

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