Sourcemodding is a non-profit community driven effort that attempts to preserve the modding and historical legacy the greatest engines the games industry has ever seen, as well as their creators Valve. Sourcemodding will also provide tutorials, documents, tools, links, answers, support and useful information on how to use the SDK’s of the engines. Imagine Sourcemodding as a giant Index of content that already exists/existed all brought together in one easy to navigate platform.