Apps similar to BiglyBT include qBittorrent, which is free and open source. Other options are Transmission, µTorrent, Deluge and Free Download Manager. There's no shortage of Torrent Clients like BiglyBT, with more than 50 alternatives for Windows, Linux, Mac, Android and the web.
libtorrent is a feature complete C++ bittorrent implementation focusing on efficiency and scalability. It runs on embedded devices as well as desktops. It boasts a well documented library interface that is easy to use.
Sweden
EU
BitLord is a BitTorrent client written in C++ for Microsoft Windows.
Features include the below: Automatic optimization for different connections. Automatic optimization of uploads to achieve the maximum possible download rate. Eliminates the wait for disk allocation.
Norway
Flud is a simple and beautiful BitTorrent client for Android. The power of BitTorrent protocol is now in the palm of your hands. Share files with ease from your phone/tablet. Download files directly to your phone/tablet.
India
A remote client for your Transmission, Deluge, µTorrent, rTorrent, Deluge or BitTorrent 6 torrent daemon. You can show and manage torrents, add them via URL or integrated torrent search. A home screen widget is included.
NetherlandsEU
CuteTorrent is a lightweight BitTorrent client with a simple, intuitive interface designed to quickly download and share torrent files. At the heart of its core resides the powerful libtorrent BitTorrent library.
Supports both bittorrent protocol and a friend-to-friend version of the same protocol which in most situations makes you anonymous.
Hadouken is an open source BitTorrent client for Windows. It runs as a Windows Service and has a built-in web interface.
SwedenEU
Using this application you can download any torrents and magnet links and start viewing media content in the built-in media player without waiting for the download completion.
EstoniaEU
BitSpirit is a very powerful and easy-to-use BitTorrent client that provides not only full BitTorrent protocol implementation but also many personalization features.
United States
torlink is a torrent finder that lives in your terminal, with zero setup and nothing to configure. One search checks a short, curated list of reputable sources at once, and whatever you pick downloads straight to your computer. The files are yours, saved to your downloads folder.
aria2 is remarkable open source software. For over a decade it has been one of the most capable download engines available, trusted by countless tools and users worldwide.
China