Top 5 BitTorrent Clients for Mac

1. uTorrent
Hands down the best Mac OS BitTorrent client
uTorrent for Mac was first released back in 2008, and a stable version 1.0 appeared last July. It sports many of the features BitTorrent users have come to expect from a BitTorrent client:
µTorrent Remote: Simple, secure access to µTorrent from anywhere. No complicated network configuration required. Add and manage your torrents from any browser, mobile browser and even an Android app.
Feeds: Subscribe and follow torrent RSS feeds. Set up Smart Feeds to auto-magically fetch torrents and start downloads for you.
Scheduler: Start, limit and stop activity at regular intervals to abide by metered and shared networks.
Much like the uTorrent for Windows version, this version of uTorrent excels at downloading files quickly with minimal memory usage.
2. Transmission
Just What You Need — None Of What You Don’t
Transmission has been built from the ground up to be a lightweight, yet powerful BitTorrent client. Its simple, intuitive interface is designed to integrate tightly with whatever computing environment you choose to use. Transmission strikes a balance between providing useful functionality without feature bloat. Furthermore, it is free for anyone to use or modify.
It Just Works
Transmission runs natively on over five operating systems. Seamless configuration of your network, intelligent banning of peers who send corrupted data, protocol encryption, and built in Peer Exchange are some of the features which enable Transmission to download your files as quickly as possible. All this is done in the background, without the user having to worry about complicated settings.
Open Source
Transmission is fully open source, with most code licensed under the liberal MIT License and with select code licensed under the GNU General Public License. If you are interested in helping out the Transmission project in any way, we encourage you to head over to our development page. The current developers welcome anybody who is interested in implementing new features, documentation or translations.
Powerful Torrent Management
These days, bandwidth is a precious commodity. Transmission allows you to ration this commodity efficiently. You might want to queue your torrents for maximum performance. Or throttle their speed during peak periods. Transmission easily lets you do both, and thus only works its hardest when you want it to. Support for Growl notifications and dock badging keep you updated with what’s going on so you can get back to doing more important things.
3. Bittorrent
BitTorrent for Mac features:
Lightweight client
Local peer discovery
Configurable bandwidth scheduler
Global and per-torrent speed limiting
RSS Downloader
Spyware-Free
It also features BitTorrent DNA, which stands for Delivery Network Accelerator. BitTorrent DNA is an enterprise-grade content delivery accelerator. It is distributed by your favorite websites and software companies to speed up your downloads by connecting to multiple sources of the same file. During and after each download, your computer helps distribute what you download. By giving and receiving in this way, your favorite websites operate more efficiently and provide a better and faster experience for everyone.
4. XTorrent
Search Everywhere, Easily
Xtorrent is all about search. Type keywords in and the results show up right in Xtorrent. One click later and you’re downloading your content. It’s ridiculously easy… and it’s only in Xtorrent.
Subscribe to Content, Easily
Xtorrent consolidates the work of many apps into one. Ditch your RSS reader and your web browser… Xtorrent lets you subscribe to RSS torrentcasts directly. Just like the search interface, you’re only one click away from downloading the latest content.
Get Exactly What You Want
You can browse the files and folders of a torrent before downloading and see its real-time swarm status. Easily narrow your search results using the straightforward media type and keyword filters.
Hardcore Technology, Mac Simplicity
Xtorrent has the svelte body of a supermodel and the brute strength of an ironman. In true Mac form, it successfully marries high-performance technology with a truly easy to use interface. Mac users deserve nothing less.
5. BitRocket
BitRocket is a Native(Open Source) BitTorrent client for Mac OS X. At the heart of it’s core resides the powerful libtorrent BitTorrent library. BitRocket is aimed to be a good alternative to other Mac OS BitTorrent clients.
RSS support (Download .torrent’s from within the application)
Integrated (Customizable) Search Engine (Download .torrent’s from within the application)
Flexible Filtering
Torrent Generator
Live Info View
UPnP and NAT-PMP Port Forwarding
This probably the least used client of the 5 mentioned above, but it still has a loyal following.