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AB Download Manager vs Internet Download Accelerator: catalog facts
AB Download Manager	Internet Download Accelerator
Free Free and open source, supported by donations.	Freemium Free edition available, with a paid Pro version.
Windows, macOS, Linux, Browser extension	Windows
Multi-connection downloads Queues with a built-in scheduler	Segmented downloads over HTTP, HTTPS and FTP Resumes broken downloads
Community support mainly through Telegram and GitHub Younger project than long-established download managers	Windows only Some features reserved for the paid Pro edition
Downloadable app, Browser extension	Downloadable app
Open source	Closed 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.