Utilities

Notepad++ syntax highlighting for Valve files

Pak Explorer is a tool to help view and edit the contents of Qukae II PAK files

TM GCF Extractor

Tool to aid in the creation of WAV files

Source Sauce is a replacement out-of-game utility for the in-game options menu of Source Games.

tool for converting closed-captions files for Source engine games

Valve Source Engine game language resource file localization tool

benchmarking tool for Linux OpenGL games

C# library for reading/parsing & writing demo files produced by GoldSource (HL1) and Source-engine (HL2) based games

Tool for porting your GoldSource maps to Source. It features many fixes that will save hours of mindless work.

HLViewer is a simple to use javascript library for viewing maps and playing replays of GoldSrc engine based games entirely in browser

Checks for errors in your map

WebGL app that renders levels from the Source Engine, created against Team Fortress 2 resources. The Source Engine and anything related to it is the property of Valve Software, who does not authorize or endorse this project in any way.

High definition pack for Half-Life and Opposing Force

Demo files to benchmark Half-Life 2

This new render dll's support transparent models in many new MOD's.

Source Multi-Tool is meant as a replacement to Valves Source SDK Launcher

A half life dedicated server (goldsrc) management tool written in ruby

A GUI for both VTEX and studiomdl.

Sound editing tool, useful for looping by adding cues

Miscellaneous programs which use Steam data

Launches source sdk for Portal

hlds (goldsrc) logs parser written in C#

a collection of tools to enrich GoldSrc

netdecode is a utility for parsing and analysing data within demo files produced by Valve's Source engine (only the Orange Box branch for now). This is primarily a tool for testing and reference. Poorly written in C#.

Valves VR toolkit for the HTC Vive

Make a .res file and populate a dir with all resources

Content installer for some source games

Valve Data File Parsing library.

selection of icons for Valve filetypes making development on windows easier

With Captioneer you can easily create your own Closed Captions for Source-based Games, like for Team Fortress 2.

Vice is Valve's tool for ICE encryption, a trick used mainly to protect weapon script files from modification by server admins.

An NPM package for manipulating FGD (Forge Game Data) files.

Compression tool used to create small files that can be transmitted by servers to gamers

Parse Source SDK '.wc' files.

This is a C# library to manage GoldSrc specific files.

This is an all-in-one kit that comes with both Hammer 3.4 and 3.5, Auto Seamer, Batch Compiler, BSP Viewer, BSP2MAP, Crafty, GCF Scape, Leak Marker, MAP Viewer, Model Viewer, PAK Explorer, Revolver, Sprite Explorer, Sprite Fixer, Sprite Viewer, Sprite Wizard, Terrain Generator, Texture Extractor, Valve Compile Tools, Wally, WinBSPC, and ZHLT.

An assortment of java programs for working with the source engine

Syntax highlighting for Valve formats in Sublime Text

For working with the same data Steam relies on

Tools which can decompress and compress Nightfire's .007 archives.

Development environment for Garrys mod Lua files

Sublime Text filter system that searches the Valve wiki for the input text

Create custom shaders for Source from a node based interface

Just extract this somewhere and drag your demo file onto it and it'll remove all the scoreboards and command menus from demos.

Very useful tool when working with faceposer and creating dialog

This Project aims to provide a parser which parses the log output of the goldsrc hlds engine (Counter-Strike, Half-Life, etc.). There is a parser written with ragel and one written by hand.

PiLauncher lists the mods installed on your favourite games to make them easy to launch

TF2 demo parsing in javascript

Work-in-progress Linux tool for manipulating .bsp files (Used by Valve's Source Engine to store map data)

This is a simple interpreter library for the Source Config.

A metamod plugin that allows you to write server side plugins with C# on the GoldSrc engine

Simple movie recording tool for Source Engine games

Silence unwanted and annoying game sounds. (Half-life goldscr engine)

Allows console commands to be sent to source-engine games (hl2.exe). Works with text-mode clients.

fixes 'bad inline model number #, worldmodel not yet setup' errors

A development integration and project building tool for Source Engine modders.

Drop items (vpk you want to extract or folders you want to convert to vpk) onto the App Icon

Collection of simple icons for Source related content (This version is from Riintouge)

extract gcfs

Alternative to Resgen, Download at own risk

Defacto tool for extracting content from steam archives

Manages custom content for steam games

Ctx converter removes the hassle of having to type in correct cmd commands to decompile ctx files

RESGen. A tool to create .res files for Half-Life.

Generate RES files for your maps

OpenGL wrapper for Direct3D

This is a set of scripts that make VMPI workers easier, vmpi is used for network distributed map compiling