Utilities

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

hlds (goldsrc) logs parser written in C#

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

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

Workshop tools for creating Nightfire content

TF2 demo parsing in javascript

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

Source and GoldSrc Query Tool

Extract the contents of VPK files

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

A PoC library for working with the VConsole network protocol.

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

Valves VR toolkit for the HTC Vive

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

Defacto tool for extracting content from steam archives

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

Very useful tool when working with faceposer and creating dialog

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

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

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

simple command line program that converts v13 packed addons to v12

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

Create custom shaders for Source from a node based interface

An assortment of java programs for working with the source engine

An assortment of java classes for working with the source engine

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#.

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

Simple movie recording tool for Source Engine games

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

vdfplus is a small library that aims to help with converting Valve's KeyValue format to JSON and vice versa.

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

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

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

An ambitious attempt at providing a WYSIWYG HUD editor for Source based games

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.

Tools for aiding in the creation of animations for view player models

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

Alternative to Resgen, Download at own risk

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

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

Rip DirectX content from games

Syntax highlighting for Valve formats in Sublime Text

Windows gadget for the source sdk

selection of icons for Valve filetypes making development on windows easier

This is a simple interpreter library for the Source Config.

Manages custom content for steam games

Sound editing tool, useful for looping by adding cues

Great little tool for adding VMF associations to specific Hammer Versions

Extract content from game archive files

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

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.

Valve Integrated Development Environment

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

Large collection of all the typical tools used in Modding

High definition pack for Half-Life and Opposing Force

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

Tool (Utility) for generating .res files for GoldSource .bsp engine maps

Debug options for HL2 Deathmatch

WAD Compiler

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

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

Documentation for the goldsrc sdk entities

Edit the UI colors in Worldcraft

a collection of tools to enrich GoldSrc

Tool to aid in the creation of WAV files

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

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

Add thumbnail support for VTF files in windows