Utilities

You scan for the maps., Then select the map. There you go. Just right there at your desktop

OmniToolz is a tweaker made for all games out there!

Notepad++ syntax highlighting for Valve files

Great little tool for adding VMF associations to specific Hammer Versions

Source Engine Scripting and Administration

Automatically makes a blank mod!

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

An assortment of java programs for working with the source engine

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

Easily recreate your gui elements in other languages

WAD Compiler

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

Very useful tool when working with faceposer and creating dialog

Content installer for some source games

PakScape is a PAK and PK3 explorer/creator

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

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

Collection of icons for valve games

Launch mods for Half-Life

Allows users to change the settings for the compiler(s) they wish to run

Create custom shaders for Source from a node based interface

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

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

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.

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

Tool to aid in the creation of WAV files

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

simple command line program that converts v13 packed addons to v12

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

hlds (goldsrc) logs parser written in C#

Edit the UI colors in Worldcraft

Simple movie recording tool for Source Engine games

Valve Source Engine game language resource file localization tool

This is a simple interpreter library for the Source Config.

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

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

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

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

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

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

This is a simple interpreter library for the Source Config.

A collection of tools to help with modding

Syntax highlighting for Valve formats in Sublime Text

Parse Source SDK '.wc' files.

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

TF2 demo parsing in javascript

Documentation for the goldsrc sdk entities

GUI frontend for BZIP2

Development environment for Garrys mod Lua files

a collection of tools to enrich GoldSrc

Source and GoldSrc Query Tool

Manages custom content for steam games

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

Valves VR toolkit for the HTC Vive

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

Windows gadget for the source sdk

OpenGL wrapper for Direct3D

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

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

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 classes for working with the source engine

Defacto tool for extracting content from steam archives

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

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

Alternative to Resgen, Download at own risk

For working with the same data Steam relies on

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

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