RStudio is an integrated development environment (IDE) for R
Kile is a feature-rich LaTeX editor
Symja - Java computer algebra language & symbolic math library
IDLE Extensions
Open Source C & C++ IDE for Windows
A customized distribution of Code::Blocks IDE for Fortran language
Performance and Productivity at Scale
Pure Trait-based Programming on the Java Platform
a Human and Artificial Intelligence Network
A tiny and lightweight IDE for the Go programming language
An IDE for lpsolve made in C language
Tools to support the learning of the C programming language
Graph algorithms interpreter, IDE, debugger, 3D visualizations.