Valve hands the Team Fortress 2 source code to modders

Valve is handing Team Fortress 2 modders the keys to the kingdom, as long as they don't try to make any money from it. The ...
PC Gamer

Pre-Fortress 2, a mod that bridges the gap between Team Fortress Classic and TF2, is coming to Steam with a whole lotta grenades

In March, Team Fortress 2 Classic revealed it would be launching on Valve's platform sometime in 2025, while Team Fortress 2 Legacy —which reverts TF2's core systems to their 2008 standard—also plans ...
Hosted on MSN

Valve has released the Team Fortress 2 SDK, which means we can expect a load of new content from the modding community.

Valve releases TF2 SDK to the public for modders, allowing changes ranging from tweaks to complete conversions. Modders can create TF2 mods for non-commercial use only, must be free, and not profit ...