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. 

2007-04-17: Version 1.7 (build 1355)
- Feature: Open URL in browser from RSS Releases tab
- Feature: Handle different half-open limits on Vista flavors
- Feature: Display Opera peer id
- Feature: Display BitTyrant peer id
- Feature: Support 3-state checkboxes in addtorrent dialog treeview
- Feature: Support multiple selection in addtorrent dialog treeview
- Feature: The addtorrent dialog treeview now displays icons based on the type of the file
- Change: Adjust horizontal scrollbar size in addtorrent dialog treeview
- Change: Logging options now independently selectable
- Change: Force a re-check after download location change of a stopped torrent
- Change: Better memory management
- Change: Add ability to install a shortcut to the quicklaunch menu
- Change: Always custom-draw checkboxes in addtorrent dialog treeview
- Change: Add Torrent dialog selects all items by default (return to old behaviour)
- Change: Handle disconnect during handshake sequence
- Change: Increased default setting of bt.auto_ul_min
- Fix: Auto uplink now correctly updates seed-only limit
- Fix: Memory leak
- Fix: Improved management of halfopen connections (remove some edge conditions)
- Fix: Display an error for invalid folder name in the edit field while browsing for folder
- Fix: Refresh RSS releases icons after download
- Fix: Properly update icon on RSS releases if item is deleted from history
- Fix: Do not add RSS item to history or update smart episode filter if .torrent download fails
- Fix: Incoming port no longer gets set to 65535 if there is an error
- Fix: Check state of items in addtorrent dialog treeview are now updated when child items are toggled
- Fix: Uninstall display name is now unicode complaint and displays correctly across locales
- Fix: Shortcut names are now unicode complaint and display correctly across locales
- Fix: uTorrent client names of later versions are now displayed properly in the peers tab
- Fix: UPNP and NATPMP now map the correct port when port 0 is chosen