OneConvert - OneConvert - fast online calculator and free file converter. Allows to convert different file formats and allows quick and accurate conversion between many units of measure.

ConvertAll - A comprehensive unit conversion program.

iLovePDF - Free online PDF tool set

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.

Material Unit Converter - Quick, free, online unit converter that converts common units of measurement, along with 77 other converters covering an assortment of units.

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.