Bittorrent Download Accelerator Pro - Version 4.0 Bittorrent Download Accelerator Pro is a download-accelerator add-on application for BitTorrent. By optimizing bandwidth utilization the program quarantines a better download experience. The variety of Bittorrent Download Accelerator Pro functions also include resuming interrupted downloads, clearing downloaded and erroneous files, optimizing Internet connection, saving configurations from last run, auto loading on startup and many others.