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Progressive Downloader vs Download Shuttle: catalog facts
Progressive Downloader	Download Shuttle
Free Free from the official site; a Mac App Store version costs 4.99 to support the developer.	Free Free on the Mac App Store.
macOS, Browser extension	macOS, Browser extension
Multi-threaded downloads with mirror search Built-in FTP, SFTP and WebDAV browser	Downloads files in parallel segments Supports pause, resume, and scheduled downloads
macOS only Current version requires macOS 13 or newer	Requires macOS 13 or later.
Downloadable app, Browser extension	Downloadable app, Browser extension
Closed source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is 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 October 8, 2026

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