What is EventScripts?
Mattie's EventScripts is a server-side plugin for Valve's Source Games (like Counter-Strike: Source, Day of Defeat: Source and GoldenEye Source).
EventScripts provides an easy-to-use scripting interface to code addons that change the gameplay or add new functionality to your game server. The EventScripts language described on this site was designed with the purpose of being easy even if you're new to scripting.
For more advanced scripting, EventScripts also supports the Python scripting language, which is discussed on python.eventscripts.com.
Highlights of EventScripts