PostgreSQL

The most powerful database system

An open source version of one of the most popular integrated development environments for Python

Word processing app with coding features specifically intended for programmers including text editing and auto-completion

An administrative tool that makes it easier to manage the databases that make up a website

A robust integrated development environment for Python that's notable for being feature rich and catered to the needs of Python developers

Free. easy to use and lightweight code editing program for Mac by Li Jianyu

The latest new operating system for Mac devices brings with it a slew of new features