FEATURE: Greatly improve startup time with many torrents (glassez, jagannatharjun).FEATURE: When duplicate torrent is added set metadata to existing one (glassez).FEATURE: Split the OS cache settings into Disk IO read/write modes (summer).FEATURE: Add support for custom SMTP ports (Emil M George).FEATURE: Add file name filter/blacklist (mxtsdev, thalieht).FEATURE: Implement new icon/color theme (now-im, xavier2k6).FEATURE: Add Filter files field in new torrent dialog (thalieht).FEATURE: Allow to use POSIX-compliant disk IO type (Coda).FEATURE: Add keyboard navigation keys (itlezy).FEATURE: Allow to set working set limit on non-Windows OS (Chocobo1).FEATURE: Add option to toggle filters sidebar (AbeniMatteo).FEATURE: Allow setting the number of maximum active checking torrents (An0n).FEATURE: Add right click menu for status filters (An0n).FEATURE: Add tuning options related to performance warnings (Chocobo1).FEATURE: Allow to disable Automatic mode when default 'temp' path changed (glassez).FEATURE: Allow to use Category paths in Manual mode (glassez).FEATURE: Add Auto resize columns functionality (Chocobo1).If until now you didn't experience any performance issue then go ahead and use the lt20 builds. The switch happened due to user demand and perceived performance issues. Builds for libtorrent 2.0.x are also offered and are tagged with lt20. NOTE: The default builds for all OSs switched to libtorrent 1.2.x from 2.0.x.WINDOWS: Only 64-bit builds will offered from now on.

New icon theme, new color theme and better startup time when using many torrents.

Available on most platforms: Linux, Mac OS X, Windows, OS/2, FreeBSD.

IP Filtering (eMule and PeerGuardian compatible).

Advanced RSS support with download filters (inc.

Available in ~25 languages (Unicode support).

Torrent content selection and prioritizing.

Advanced control over trackers, peers and torrents.

Nearly identical to the regular UI, all in Ajax.

Remote control through a Web user interface.

DHT, Peer Exchange, Full encryption, Magnet/BitComet URIs.

Per-category-specific search requests (e.g.

Simultaneous search in most famous BitTorrent search sites.

Well-integrated and extensible Search Engine.

Qbittorrent download