HL Improvement is dedicated to the creation of custom content for all things Valve related. With tons of custom content, and a friendly community. What could go wrong?

Half-Life Inside is a HL community for Russian speaking fans.

Half Life Storm contains forums for discussions about the Half Life Series and the other Source Engine games by Valve. It is mainly directed towards mapping, as it contains many mapping tutorials. It will expand into other categories later on.

Half-Wit 2 is packed with tutorials, guides and other useful bits of information to help anyone creating custom content for the Source Engine. There is plenty of good stuff here and well worth checking out.

Halflife2.net features information about all Valve titles, as well as the largest Valve forum community outside of Steam. It is a good resource for news and general information about the games, and the community can answer most Half-Life related question. The site is hosted and supported by Valve themselves.

HD Games is a Valve games community in Argentina. HD Games es una nueva comunidad en Argentina, sobre los juegos de Valve(CSS,TF2, etc). tiene un espacio de foro y servidores propios, ademas de una muy buena respuesta a la hora de opinar sobre como mejorar la pagina y los servidores.

Headcrab.pl is a Polish website that covers most of Valve’s newer games.

HL Gaming covers all the news related to Valve gaming, including TF2, L4D and all your HL favourites.

Half-Life Portal is the biggest German website for Half-Life games, mods and other games from Valve. This web-portal has a community with forums, many news, articles, downloads and informations regarding most of Valve’s games, as well as Steam and third-party Source Engine games.

HL2 DM University’s mission statement is to promote and improve the online Half-Life 2 Deathmatch experience for all players by providing an extensive repository of useful and interesting information and files.

HL2Spain is a Spanish fan-site and gaming community covering everything about the Steam Platform, Valve Games, and Source Engine based Games & MODs. It includes news, reviews, previews, manuals and tutorials done by their team and the community itself.