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Download Master vs Internet Download Accelerator: catalog facts
Download Master	Internet Download Accelerator
Free Free to use with no limitations, with optional donations.	Freemium Free edition available, with a paid Pro version.
Windows, Browser extension	Windows
Multi-stream downloading with resume Scheduler, site manager and browser integration	Segmented downloads over HTTP, HTTPS and FTP Resumes broken downloads
Windows only Closed source	Windows only Some features reserved for the paid Pro edition
Downloadable app, Browser extension	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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.