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Internet Download Manager vs AB Download Manager: catalog facts
Internet Download Manager	AB Download Manager
Paid Paid licence after a 30-day free trial.	Free Free and open source, supported by donations.
Windows, Browser extension	Windows, macOS, Linux, Browser extension
Dynamic segmentation for faster downloads Resumes interrupted downloads	Multi-connection downloads Queues with a built-in scheduler
Paid after the trial period Windows only	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.