[k3n]

Have you ever installed the SourceSDK? It's an AMAZING set of tools, all authored and regularly updated by Valve, and has been around for many years.

https://developer.valvesoftware.com/wiki/SDK_Installation

Granted, this latest announcement is indeed a considerable leap even from the offerings of the SDK, since it looks to be aimed at the more non-technical user.

[mcabral]

Its awesome that Valve releases their toolkit and I agree that most of the tools are pretty decent. Hammer (the level editor) is getting really long in the tooth though - it hasn't changed much fundamentally since Half Life 1 was released. And even then, it was pretty much just a third party editor for Quake (iirc - some of the details may be off).