The Microsoft Build Engine (MSBuild) build platform for .NET and VS
2D Game Engine
Modern 3D engine and IDE written using C# and C++.
A Zebra Programming Language (ZPL) IDE with embedded viewer
Second Life script editor.
A powerful HTML, C#, PHP editor for windows
NS-ORG IDE for DOT NET Programming
Custom script editor for RPG Maker XP, VX, and VXA
PostScript editor, PDF and PS Viewer, Converter
A lightweight, powerful editing tool for kOS Autopilot Mod on KSP.
View Builder is software that allows you to quickly create webpages
WhiteSnake is professional script editor for many script languages