qBittorrent 5.1.1 was released on June 23, 2025. It is an open-source torrent client developed using the Qt toolkit, with source code available on GitHub under the GPLv2+ license. The software is compatible with Linux, Windows, and macOS. Key features include an integrated search engine, RSS feed subscription, support for multiple BEP extensions, remote management via a web interface, sequential downloading, advanced settings for torrents, bandwidth scheduler, IP filter, torrent creation interface, and support for UPnP and NAT-PMP. The 5.1.1 update addresses bugs, enhances the WEBUI, adjusts versions for Windows and Linux, improves the search history length counter, clarifies maximum seeding time, refines coefficient handling, and ensures compatibility with Qt 6.6.0.