There are 2 repositories under hl2 topic.
Fragsurf is an actively developed standalone game based on HL2 surf and bhop movement mechanics.
Prometheus Exporter for SRCDS game servers, working with CSGO, CSS, GMod, HL2, L4D2 and TF2 !
Porting Half-Life 2 base to the Alien Swarm Engine
Used to parse source demos.
BrainBread 2 Source Code
☢️ An up-to-date Source Server Query protocol library written in C99
Team Fortress 2 server plugin that allows players to sprint like in Half-Life 2
A collection of maps for Source Engine based mods.
Half-Life 2 related tools for Garry's Mod Sandbox gamemode
Half-Life: Blue Shift Co-op
https://forums.alliedmods.net/showthread.php?t=267805
A simple Blazor powered game server browser
HGSM-HattrickGameServerManager
A project for all my game-projects based on Mapbase
HL1/ HL2 Rcon Studio
Compiled and Fixed VMFs from the leaked WC map pack for Leak and Retail HL2
Infestus scripts & localization!
Автор D@Ni1986 (hl2mp.ru): - Исходный код игрового сервера Half-Life 2: Deathmatch (Coop)
A simple python script to compile all .vmf files in the same directory. Easily customisable and fast!
This is where all of my edited maps goes here.
cvar scripts for surfing and bhopping in different angle styles while looking forward. for usage on LAN for TAS productions.
The complete game files of Contingency, a Half-Life 2 modification built using the Source engine.
The complete source code of Contingency, a Half-Life 2 modification built using the Source engine.
A recreation of HL2DM in GMOD. DEAD PROJECT (for now(probably forever))
Backup your maps with one click