Aspen Plus - Maximize profits using a plant-wide simulation solution that combines unparalleled accuracy and engineering collaboration with time-saving workflows.
Numi App - Numi is a beautiful text calculator for Mac.
MATLAB - A high-level language and interactive environment for numerical computation, visualization, and programming
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 .
SMath Studio - Tiny, powerful, free mathematical program with WYSIWYG editor and complete units of measurements support.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.