aria2 vs BitComet

aria2 has no write-up on Specifiction yet; its figures are above.

BitComet is a free download client for BitTorrent, HTTP, and FTP, designed for multiple simultaneous downloads. It supports Magnet Links, HTTP Seeding, DHT, and UDP tracker Protocol v2. During BitTorrent transfers, it can also use HTTP, FTP, and eMule sources. Its Long-Term Seeding Technology searches for more seeds when a download stalls close to completion. For video previews during a download, it prioritizes the file's header and tail. Download controls include global and per-task speed limits, bandwidth scheduling, and automatic shutdown. Network features include tracker-free DHT, Windows ICF and ICS configuration, and UPnP router port mapping. A cloud service connects the BitComet Mobile app to the desktop edition behind NAT or a firewall, using end-to-end encryption. The download page lists Windows, macOS, Linux, and Android support, as well as Docker images for GUI and WebUI. The free plan is limited to private personal use and non-commercial purposes. BitComet also lists a help wiki, support forum, and email contact.