qBittorrent is an open source torrent download manager for all of your desktop platforms.
dottorrent-gui allows you to create torrents on your machine using a graphical user interface.
WebTorrent Desktop app lets you directly stream media content from the torrents without downloading them.
There are a number of torrent managers out there but Deluge stands out of them as it’s lightweight, has a number of features, is available for multiple platforms, and is free and open source.
BitTorrent allows you to download torrents and is available for multiple desktop and mobile platforms.