The IDE for competitive programming
Open-source, cross platform Qt based IDE for reverse-engineering
Cross-platform IDE for developing embedded solutions and desktops
Kile is a feature-rich LaTeX editor
Thinking notebook and Markdown editor
Qt Creator Cppcheck integration plugin
Electronic design and programming tools suite like Eagle, MpLab
Light-weight Scintilla-based text editor with syntax highlighting
Graph algorithms interpreter, IDE, debugger, 3D visualizations.
Simple and Powerful Latex Editor