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Internet Download Accelerator vs HTTP Downloader: catalog facts
Internet Download Accelerator	HTTP Downloader
Freemium Free edition available, with a paid Pro version.	Free Free and open source.
Windows	Windows, Browser extension
Segmented downloads over HTTP, HTTPS and FTP Resumes broken downloads	Lightweight native Windows program Browser extensions for Chrome and Firefox
Windows only Some features reserved for the paid Pro edition	Windows only Handles HTTP and HTTPS downloads only
Downloadable app	Downloadable app, Browser extension
Closed source	Open source
License not stated	License: GPL-3.0
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 24, 2026

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