Utilities

a tool for game replays recorded with Half-Life.

Javascript parser for valve gui files -- ported from optf2's vgui.py

simple command line program that converts v13 packed addons to v12

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.

Resguy is similar to RESgen and FLRGen, but can find all content that Sven Co-op maps are allowed to customize and only includes what is required

An assortment of java programs for working with the source engine

This is a pixel shader for bloom-like effects on any Half-Life engine game.

selection of icons for Valve filetypes making development on windows easier

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

Extract the contents of VPK files

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

Benchmark which introduced some of the new and more advanced features of the Source engine and Valve's hybrid threading technology

This is a simple interpreter library for the Source Config.

Sound editing tool, useful for looping by adding cues

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.

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

Automatically saves demos recored in source engine games

VOGL is a debugger for the OpenGL rendering API intended to be used in the development of video games

The second release of 007 Nightfire's PC modding tools originally released many years ago including Gearcraft, Model Compiler, Map Decompiler and more.

Great little tool for adding VMF associations to specific Hammer Versions

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#.

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

This is a simple interpreter library for the Source Config.

Launch mods for Half-Life

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

OmniToolz is a tweaker made for all games out there!

For working with the same data Steam relies on

Valve Data File Parsing library.

PakRat is a graphical replacement for the BSPZIP program

WAD Compiler

FGD highlighting for Sublime Text editor

Windows gadget for the source sdk

benchmarking tool for Linux OpenGL games

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

PackBSP is a tool to help automatically manage and pack dependencies in custom maps for games

Simple movie recording tool for Source Engine games

Development environment for Garrys mod Lua files

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

Alternative to Resgen, Download at own risk

Makes starting Source based game server as easy as possible

Checks for errors in your map

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

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

Workshop tools for creating Nightfire content

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

Miscellaneous programs which use Steam data

A GUI for both VTEX and studiomdl.

Simple movie recording tool for Source Engine games

Source Engine Scripting and Administration

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

TF2 demo parsing in javascript

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

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

Launches source sdk for Portal

HLLib is a package library for Half-Life that abstracts several package formats

Extract content from game archive files

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.

Rip DirectX content from games

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

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

Debug options for HL2 Deathmatch

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

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

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

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

Easily recreate your gui elements in other languages

Spreadsheet listing HL2 models