When comparing BitTorrent Surf vs Tribler, the Slant community recommends Tribler for most people. In the question“What are the best Torrent clients?” Tribler is ranked 17th while BitTorrent Surf is ranked 19th.
Ranked in these QuestionsQuestion Ranking
Pro Built-in custom search
Built-in search engines allow finding torrents to download right from withing the torrent client. BitTorrent Surf can be customized to include multiple custom search engines.
Pro Uses P2P onion routing to provide anonymity
Pro No website needed to find torrents
Tribler has a built-in, extendable search.
Pro Has a p2p search engine that can never be taken down
Pro Free and ad-less
Tribler is free and completely ad-less.
Tribler covers basics such as Prioritization, Selective Downloading, DHT, PEX and Magnet URIs as well as Broadcatching and Search. It includes MSE/PE for security. It has graphical, web and command line interfaces. Has UPnP, NAT-PMP, NAT traversal for automatic router configuration. Has µTP data transfer protocol support. Even covers web seeding and embedded tracker. And it auto-updates.
Watch your videos while you download them.
Con Slow development
BitTorrent Surf has been in beta since it was announced in 2013. No changes to the add-on have been made since.
Includes "BitTorrent Bundle recommendations".
Con Unknown underlying technology
It is unclear what BitTorrent protocol features or extensions are supported by the add-on.
Con Highly questionable developer competence
On December 2014, Yawning Angel did a casual code analysis and found a plethora of Tor protocol flaws and implementation issues calling in question their general quality assurance practices and code quality.
Con Lacks IPv6 support
Con No super-seeding
Super-seeding is an algorithm used to allow downloaders become uploaders quicker. Tribler lacks support for this functionality.
Con No local peer discovery
Con Files can't be downloaded sequentially
Sequential downloading can be used to stream media files such as video and audio while the download is still in progress. Transmission requires waiting until the complete file is downloaded before it's ready for use.
Con No tracker exchange
Tracker exchange functionality allows peers to exchange information about trackers of a given file. It is another way of ensuring that the file is downloaded from the optimal source. Tribler lacks this functionality.