To ensure your security, always download the software directly from the official BitTorrent Website. For Windows Users
The original desktop application designed for bulk downloads and advanced configuration. This version is currently Windows-only (supporting XP and up) and is not compatible with modern macOS versions. How to Download and Install BitTorrent for Free
Free Download BitTorrent: The Ultimate Guide to Getting Started
BitTorrent Classic | The Original Torrent Client for Desktop
Depending on your operating system and needs, you have two primary options from the official developer: