What are some alternatives?
When comparing multiConvert and SwissConverter, you can also consider the following products
ConvertAll - A comprehensive unit conversion program.
Elk - The fastest way to convert currencies on mobile.
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.
Converber - Xyntec Automation provides project management and systems integration.
XE.com - XE.com Inc. (XE) is a Canadian online foreign exchange services company.
Unit Wolf - Unit conversions and calculator.