When comparing Tribler vs Folx, the Slant community recommends Folx for most people. In the question“What are the best Torrent clients?” Folx is ranked 8th while Tribler is ranked 21st.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro No website needed to find torrents
Tribler has a built-in, extendable search.
Pro Uses P2P onion routing to provide anonymity

Pro Has a p2p search engine that can never be taken down
Pro Free and ad-less
Tribler is free and completely ad-less.
Pro Full-featured
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.
Pro Video-on-demand
Watch your videos while you download them.
Pro Remember login and password for websites
Pro Speed control
You can set up speed control in different ways.
Pro Allows torrent search
PRO version of Folx enables torrent search directly from the application.
Pro Splitting of downloads in up to 20 threads
Download can be split into up to 20 separate simultaneous downloads - threads. When the server supports multiple connections this can greatly improve download speed.
Pro Scheduling of downloads
You can choose the time for starting the download.
Cons
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.
Con Lacks NAT traversal support
Con No UDP tracker transfer protocol support
Con Customer support is terrible, do not send them money
Customer support refuses to be helpful. DRM must phone home and support blames you when their website goes down.
Con Does not quickly close after download completes
It takes 24 seconds before folx will close when a download has completed, and this window pops up and grabs focus interupting whatever it is you're doing. Very intrusive.
Con Sometimes it doesn't complete the schedule
Con Sometimes downloads start automatically
Con Difficult to uninstall browser addons
You will need to uninstall the addon and then clear the browser's cache. With Safari you will need to enable the developer menu before you can do this.
Con Useless
Can't download anything without upgrading to Pro paid version.
