Utilities

PakScape is a PAK and PK3 explorer/creator

Easily recreate your gui elements in other languages

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.

selection of icons for Valve filetypes making development on windows easier

hlds (goldsrc) logs parser written in C#

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

Automatically makes a blank mod!

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

Source Engine based Project Cleaner - Primarily for SDK 2013 to make certain files more Linux & Mac friendly.

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

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

Adds TGA Thumbnails in windows

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

Manages custom content for steam games

Free and open source SDK launcher for Counter-Strike: Global Offensive and other source engine games

Half-Life Launch Pad is an application to ease the process of loading mods and maps for Source and GoldSource.

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

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

a free open source tool that can be used for tuning and cleaning up Steam and Source engine games.

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

This tools manages your custom modifications for your Source based Steam games.

OpenGL wrapper for Direct3D

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

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

Collection of loaders for game engine asset types. Currently supported: Half-Life BSP, MDL and SPR. (requires compilation)

Launcher tool for Half-Life

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

Valve Source Engine game language resource file localization tool

This simple script in batch add a button in the windows context menu for create files in VPK format

simple command line program that converts v13 packed addons to v12

An assortment of java classes for working with the source engine

Valve Data File Parsing library.

Simple movie recording tool for Source Engine games

A utility that automatically generates a formatted .kv file based on your selection.

Demo files to benchmark Half-Life 2

Collection of icons for valve games

Defacto tool for extracting content from steam archives

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

For working with the same data Steam relies on

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

Valves VR toolkit for the HTC Vive

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

Alternative to Resgen, Download at own risk

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.

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

AMD dropped opengl support at one stage for their drivers and this helps rectify the issue

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

TM GCF Extractor

A collection of tools to help with modding

Render smoother Source Engine videos, faster.

A collection of tools and libraries for the Source Engine on the Xbox 360

Edit the UI colors in Worldcraft

PakRat is a graphical replacement for the BSPZIP program

extract gcfs

Notepad++ syntax highlighting for Valve files

Here are compiled versions of some of the tools from the source sdk released on 12/1/2004.

Extract the contents of VPK files

OmniToolz is a tweaker made for all games out there!

simple command line program that converts v13 packed addons to v12

Valve Integrated Development Environment

Add thumbnail support for VTF files in windows

FGD highlighting for Sublime Text editor

This is a simple interpreter library for the Source Config.

Create custom shaders for Source from a node based interface

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

This tool was manly made to extract out the mapname of GoldSrc- and Source Engine demofiles and place it in the name of the demofile itself.

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

Debug options for HL2 Deathmatch