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Progressive Downloader vs AB Download Manager: catalog facts
Progressive Downloader	AB Download Manager
Free Free from the official site; a Mac App Store version costs 4.99 to support the developer.	Free Free and open source, supported by donations.
macOS, Browser extension	Windows, macOS, Linux, Browser extension
Multi-threaded downloads with mirror search Built-in FTP, SFTP and WebDAV browser	Multi-connection downloads Queues with a built-in scheduler
macOS only Current version requires macOS 13 or newer	Community support mainly through Telegram and GitHub Younger project than long-established download managers
Downloadable app, Browser extension	Downloadable app, Browser extension
Closed source	Open source
License not stated	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 23, 2026	Official website Full listing and sources Checked September 23, 2026

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