List of third-party Source SDK mods

List of Source engine mods built using publicly available Source SDK code and Source SDK Base. Note that this page does not include titles such as Garry's Mod, Black Mesa and Zombie Panic! Source, all of which are now standalone games and formerly Source SDK Base mods.

2004 - 2009

Year	Title	Developer(s)	Publisher(s)	Engine branch	Platforms	Notes
`2004`	JBMod	TEAM JBMOD	TEAM JBMOD	Source 2004 (launch) Source 2013 Multiplayer	PC: Windows, Linux	Earliest Source mod to be created, shortly after the release of Source SDK. It is also the spiritual predecessor to Garry's Mod. The game was later re-released on Steam in 2022, running on Source 2013.
`2005`	Synergy	Synergy Team	Synergy Team	Source 2006 (pre-Steam) Source 2013 Multiplayer (current)	PC: Windows, Mac, Linux	A co-op mod that allows you to play the entire Half-Life 2 campaign in Multiplayer.
`2005`	Dystopia	Puny Human	Puny Human	Source 2013 Multiplayer	PC: Windows, Linux	Originally a mod distributed via websites, now available as standalone on Steam.
`2007` (Mod) `2008` (Steam)	Fortress Forever	Fortress Forever Development Team, Trepid Studios	Fortress Forever	Source 2006 Source 2013 Multiplayer (In development)	PC: Windows, Linux
`2007`	Age of Chivalry	Team Chivalry	Team Chivalry	Source 2007	PC: Windows
`2007`	INSURGENCY: Modern Infantry Combat	Insurgency Development Team	New World Interactive	Source 2006	PC: Windows
`2008`	D.I.P.R.I.P.	EXOR Studios	EXOR Studios	Source 2007	PC: Windows
Year	Title	Developer(s)	Publisher(s)	Engine branch	Platforms	Notes