electronicarts/CNC_TS_and_RA2_Mission_Editor

Command & Conquer: Remastered Collection

Command and Conquer: Generals - Zero Hour

Command and Conquer Tiberian Dawn

It's a Doom editor

Command and Conquer: Generals - Zero Hour

A Warcraft III world editor.

Vanilla Conquer provides clean, cross-platform builds of the C&C Remastered Collection and the standalone legacy games.

TEdit - Terraria Map Editor - TEdit is a stand alone, open source map editor for Terraria. It lets you edit maps just like (almost) paint! It also lets you change world settings (time, bosses downed etc), edit chests and change sign, make epic dungeons, castles, cities, and add rewards for your adventurers!

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Linux, *BSD and Mac OS X.