SpeedCrunch - SpeedCrunch. SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface. It is free and open-source software, licensed under the GPL. Download Documentation Donate .

ConvertAll - A comprehensive unit conversion program.

Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.

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.

Numi App - Numi is a beautiful text calculator for Mac.

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.