The best answers are voted up and rise to the top I was looking for a torrent client for ubuntu server a few weeks ago.I didn't found anything interesting but µTorrent server.It runs a web interface which can be accessible from serveraddress:8000/gui. .Be aware that this is a alpha version and it may have some problems.They say this

Download large files as quickly as possible with the best free torrent clients. Torrenting is ideal for downloading exceptionally large files – like a video or a large piece of software 6 Best Ubuntu Torrent Clients for Ubuntu Linux A Torrent client helps you manage the torrent files easily without any problems. Of course, depending on your Linux distribution, you may have a Torrent client installed by default. But, in general, including for Ubuntu Linux, you need to know about best Torrent clients available out there to make 9 Best Ubuntu Torrent Client In 2019 - How To Use Linux Otherwise it could easily have been the best torrent client for Linux as well. Still, µTorrent has a wide range of impressive features. A BitTorrent-project, this application is tiny, lightweight and supports both torrents and magnets. Its footprint on disk is just over 2MB. That, combined with the fact that it requires just about 6Mb of RAM The Best BitTorrent Clients for 2019 | PCMag Sep 13, 2019

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