IBM i development environment (IDE)
An unofficial elementary OS (Vala) oriented IDE.
Innovative IDE based on VRL (Visual Reflection Library)
Micropython IDE
IDE for ArmA
Hyper IDE - A web based IDE for 100+ programming languages
Spatially Explicit Integrated Modeling System --- open-source, cross-pla...
DEAD Unofficial GIT clone of C::B repo in SourceForge
Visual Reflection Library