No database or tool for this game yet.
Internal Valve data from 2003 through 2013 leaked online on October 10, including early builds and design documents.
A reported archive from Valve’s old Steam2 infrastructure is exposing pre-release builds, assets and tools from 2003 to 2013. Here is what has been verified so far — and why it is not proof of Half-Life 3.
Half-Life 2: Lost Coast
Same series
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life Deathmatch: Source
Half-Life 2: Episode One