What are some alternatives?
When comparing lesitedalexis.webou.net Converter and XE.com, you can also consider the following products
ConvertAll - A comprehensive unit conversion program.
Tweetbot - Sync your timeline across your iPhone, iPad, and Mac. Mute tweets by user, hashtag, tweet source, or keywords (including regex). 3rd Party support for image, video, read later, and timeline sync services.
Elk - The fastest way to convert currencies on mobile.
Unit Wolf - Unit conversions and calculator.
multiConvert - multiConvert is a simple to use small sized unit converter for converting any unit into another one and getting the real time result on the main window of this program.
Converber - Xyntec Automation provides project management and systems integration.