uTorrent是一款小巧的BT客户端程序，拥有常见的功能，但是不支持UDP的tracker服务器。内网下载方面也有不错的表现，外网就更不用提了。支持多任务同时下载，支持设置文件下载优先级，可以根据计划任务调整占用的带宽，全局/单个任务的速度限制，快速断点续传机制，支持UPnP，支持流行的BT扩展协议，支持用户来源交换，支持DHT。最小内存占用仅6MB！

μTorrent is an efficient and feature rich BitTorrent client for Windows sporting a very small footprint. It was designed to use as little cpu, memory and space as possible while offering all the functionality expected from advanced clients. Most of the features present in other BitTorrent clients are present in μTorrent, including bandwidth prioritization, scheduling, RSS auto-downloading and Mainline DHT (compatible with BitComet). Additionally, μTorrent supports the Protocol Encryption joint specification (compatible with Azureus 2.4.0.0 and above, BitComet 0.63 and above) and peer exchange. μTorrent was written with efficiency in mind. Unlike many torrent clients, it does not hog valuable system resources - typically using less than 6MB of memory, allowing you to use the computer as if it weren't there at all. Additionally, the program itself is contained within a single executable less than 220 KB in size.

Features:
* Multiple simultaneous downloads
* Configurable bandwidth scheduler
* Global and per-torrent speed limiting
* Quick-resumes interrupted transfers
* RSS Downloader
* Trackerless support (Mainline DHT)

Although compact and resource-friendly, μTorrent does not skimp on features, with a feature set that rivals those of larger clients, such as Azureus, BitComet, and BitTornado. μTorrent's more notable features include:

Bandwidth limiter (automatic and manual)
Customizable interface
Disk Cache system
Distributed Hash Table (DHT) support
Download bar
Download scheduler
Embedded tracker
HTTPS tracker support
Initial Seeding (Super Seeding)
IP Blocklist support
Localization
Multi-scrape support
Multi-torrent interface
NAT Port Mapping Protocol (NAT-PMP) support
Peer Exchange
Protocol Encryption
Proxy support
RSS "Broadcatching"
Search bar
Selective file downloading
Tetris (Easter Egg)
Unicode support
Universal Plug and Play (UPnP) support
Web Interface
Web Seeding support

2008-03-28: Version 1.8 beta (build 9272)
- Change: better error messages on bind failure
- Change: clear peer traffic logging options on startup (fixes noisy logging after 1.7 upgrade)
- Change: diskio.smart_sparse_hash for broken file systems (like Windows Home Server)
- Fix: UNC and long path parsing
- Fix: more "Invalid Parameter" errors when drives are not present when the torrent is added
- Fix: DHT dump buckets formatting for large numbers
- Fix: black progress bar on 0 byte files
- Fix: Enable/Disable Feed option on All Feeds item

Alpha更新：http://forum.utorrent.com/viewtopic.php?id=31998
更新：http://download.utorrent.com/1.7.5/utorrent-1.7.5.txt
官网：http://www.utorrent.com
~Support Windows 98/ME, NT/2000, XP, 2003, and Vista~

自己弄绿色版提示：
程序安装会跑到C:\Documents and Settings\XXX(你的用户名)\Application Data下。复制uTorrent目录到任何地方就是绿色版了，下次不会再在Application Data目录下生成东西了。

v1.8 Build 9272 Beta 官方下载：

点击这里下载文件

v1.7.7 Build 8179 Final 官方下载：

点击这里下载文件

多国语言包：

点击这里下载文件

帮助文件：
点击这里下载文件

一些皮肤：
http://www.utorrent.com/skins.php
http://www.utorrent.com/download/langpacks/dl.php?build=3295