Meld

A free development application for Mac that allows you to compare file differences

Commercial software that allows you to secure and interpret data in the Python programming language

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

A text editor for developers that sports a trimmed down interface and a decent amount of features

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

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

A text editor for Macs designed with HTML, JavaScript, and CSS files in mind