Calculist - The open-source, web-based thinking tool that facilitates effective thinking for solving problems.
Numi App - Numi is a beautiful text calculator for Mac.
Bl.ocks - Simple viewer for sharing code examples hosted on GitHub Gist.
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 .
Carbide - A new kind of programming environment
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.