Python IDE for beginners
IntelliJ IDEA & IntelliJ Platform
Simple crossplatform IDE for NASM, MASM, GAS and FASM languages
A free C, C++ and Fortran IDE
A powerful, lighweight and cross-platform C/C++ IDE
A powerful editor and graphical debugger for code written in Scilab
RAD Tool and IDE for PHP, JSP, ASP, C++ and Java Swing
Cross-platform IDE for developing embedded solutions and desktops
Komodo Edit is a fast and free multi-language code editor
Lightweight, cross-platform & full-featured shader IDE
Open Source C & C++ IDE for Windows
A customized distribution of Code::Blocks IDE for Fortran language
A simple Bash IDE / Debugger
A lightweight programming environment for Java
BASIC language interpreter (multiplatform)
The professional, open source development tool for the open web
Second Life script editor.
Graph algorithms interpreter, IDE, debugger, 3D visualizations.
IDE for PIC microcontrollers