Eclipse plugin for VCS ClearCase
A simple Bash IDE / Debugger
EditBox is the Eclipse plugin for source code background highlighting.
Source code for the processing core and development environment
Open-source plugins included in the distribution of IntelliJ IDEA
Text-based IDE for the Java programming language
Programming in MS Paint
A lightweight programming environment for Java
Powerful tool for modern apps: Django, Rails, Laravel, Node, Go, Java
Performance and Productivity at Scale
Vim-like editing in Eclipse
A visual-based IDE for C language uses block drag and drop technology
Literate programming for eclipse
Codenvy
Light-weight Scintilla-based text editor with syntax highlighting