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Progressive Downloader vs Persepolis: catalog facts
Progressive Downloader	Persepolis
Free Free from the official site; a Mac App Store version costs 4.99 to support the developer.	Free Free and open source under the GPL 3.0.
macOS, Browser extension	Windows, macOS, Linux, Browser extension
Multi-threaded downloads with mirror search Built-in FTP, SFTP and WebDAV browser	Up to sixty-four connections per download Queues with scheduling and a shutdown-when-finished option
macOS only Current version requires macOS 13 or newer	Releases are infrequent; 5.2.0 dates from July 2025 The interface is plain Qt and shows its age
Downloadable app, Browser extension	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	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 21, 2026

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