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HTTP Downloader vs AB Download Manager: catalog facts
HTTP Downloader	AB Download Manager
Free Free and open source.	Free Free and open source, supported by donations.
Windows, Browser extension	Windows, macOS, Linux, Browser extension
Lightweight native Windows program Browser extensions for Chrome and Firefox	Multi-connection downloads Queues with a built-in scheduler
Windows only Handles HTTP and HTTPS downloads only	Community support mainly through Telegram and GitHub Younger project than long-established download managers
Downloadable app, Browser extension	Downloadable app, Browser extension
Open source	Open source
License: GPL-3.0	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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