Deluge is an open-source cross-platform torrent client written in Python. It has been around since 2006 and offers many features that, while niche, many consider to be critical to their setups.
Information sourced mostly from Deluge's Downloads Page
You can find the latest Windows installers here
lt2.0 in the filename means the installer includes libtorrent 2.0.x instead of the older 1.2.x
Due to most default OS repositories being outdated, I recommend using Deluge's repositories to install the latest version.
apt-get to install
sudo add-apt-repository ppa:deluge-team/stable
sudo apt-get update
sudo apt-get install deluge
pip3 to install (included in the Python package)
pip3 install deluge
You can find this project's pip repo @ pypi.org/project/deluge/
If you want to install deluged as a service, documentation can be found here