Komodo Edit is a fast and free multi-language code editor
Develop, stage and test on-prem or in your private cloud
Integrated Development Environment (IDE)
Open-source automated grading of programming assignments
WYSIWIG conditional compilation preprocessor for Java etc.
Light-weight Scintilla-based text editor with syntax highlighting
Prila the most intelligence perl IDE
All in one Programming Kit
NS-ORG IDE for DOT NET Programming