What are some alternatives?
When comparing aDownloader and dottorrent-gui, you can also consider the following products
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
Koinonein BitTorrent Client - A fast and modern BitTorrent Client.
µTorrent - Looking for a torrent site to download movies, music and more? Choose from top torrent sites like The Pirate Bay, RARBG, 1337X, and dozens more. (October 2019)
qMakeTorrent - an advanced torrent file creator with batch functionality, powered by libtorrent-rasterbar
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Bitford - BitTorrent client for Chrome that can stream videos while they're being downloaded