: PD is available as a free version on the official MacPSD website , while a paid "Plus" version is available on the Mac App Store to support the developer. Download Progressive Downloader for Mac | MacUpdate
: Automatically finds and connects to the fastest available mirror for a specific file. PD (Progressive Downloader) 5.7
: Optimized the engine for fetching and naming video files from YouTube. : PD is available as a free version