Numi App - Numi is a beautiful text calculator for Mac.
MySQL - The world's most popular open source database
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 .
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Qalculate! - Qalculate! is a multiplatform multi-purpose desktop calculator.
SQLite - SQLite Home Page