Transmission is a torrent client that allows you to download torrents from public trackers in a simple and intuitive manner. Download With Transmission is an unofficial, community-driven add-on for Google Chrome, Safari, Firefox, and Opera browsers that lets you send torrent links directly to Transmission, no matter what the website. In addition, you can now send magnet links, which is a bit more convenient and is less likely to get your computer infected with malware.

With this addon, you can send a magnet link via Transmission, and it will download the torrent in the folder ~/torrents.