Numi App - Numi is a beautiful text calculator for Mac.
Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
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 .
Rust - A safe, concurrent, practical language
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible