Level Creation

A GUI tool for embedding custom content

The Calliper editor (formerly Crowbar) is designed to be a cross-platform, extensible level editor that accelerates the creation of computer game maps, and is targeted specifically at Source engine games.

Color Correct is a 3DS Max texture plug-in which alters the colors of any texture

A slimmed down copy of the Source SDK 2013 map compile tools

Allows you to create interesting 3D shapes without going through all the hassle of vertex manipulation

Small collection of obfuscation techniques for maps

This program adds custom content to a BSP. It is a GUI version of Valve's bspzip.

Small utility for helping protect bsp maps

Frontend wrapper for netvis

Inserts instances into a map

Map viewer for Valve's GoldSrc engine (needs to be compiled)

A tool to generate cl_leveloverview from BSP files

Legacy compilation tools for quake

Decrypt files that have been protected with BSPProtect (commandline)

Decompile GoldSrc .bsp files into Hammer .map files.

The open source, cross platform level editor for idtech games (GTKRadiant fork)

DirectX based application to open and view Half Life 1 game files (Source Code)

Adjust the light levels in a map

A graphical interface for creating and editing Half-Life FGD Files.

Small Tool for extracting Textures from BSPs and into WADs. Includes GUI Versions WinTextract & Textract Suite

Valve Batch Compile tool (VBCT) is a source map Compile tool

Lists maps for easy maplist.txt

Optimizes the entities in compiled maps, allowing you to include more entities and also reduce network traffic.

This tool can help you by grouping the map into VisGroups based on a grid.

Aids in nthe process of converting GoldSrc maps into Source maps

A collection of JavaScript functions to load Goldsource and Source map files and render them. Not an editor.

Alternative Map Editor for GoldSrc games

Create Displacements for your maps

Used to take source-css console commands and convert them into .vmf-compatible commands.

makes textfiles to go with your overview pictures from Half-Life maps.

Standalone Compiler for GoldSrc Maps

Simple bindings for debugging maps

Tools to aid in creation of HDR Targa files (command line)

Convert Worldcraft 3.3 Maps into the Radiant Format

Edit the entities of Source and GoldSrc games

GUI Compiler for Source Maps

Q3 .map to HL2 .vmf converter

GUI frontend for Source compiling tools

Simplest Pak extractor ever. Just pick a map and click the button

Small application for viewing map files, Superseded by crafty

Simple tool to dump raw data from Valve's map files.

Compiler and Decompiler rolled into one tool

Analyzes and reports on errors in the map compilation process

It is another type of solid which is perfect for creating terrain. A plugin for Hammer

This is the barebones program that GFlip uses as it's base

Modification of Source Valve Hammer Editor to fix some issues. Fixes brush vertex precision loss.

automatically finds mapfiles to compile in the directory it is run

Great little command line tool for creating a backup of your map during the compile process

This project is a prototype map renderer for Half-Life BSP files.

a 3D Shape Generator for the Quake & Half-Life Map Format

Crafty is a 3D object, material, model and file browsing utility for Source & GoldSrc Maps.

Edit light values inside a Maps RAD file

Basic Model viewer for GoldSrc

A collection of FGD's for GoldSrc

This is an modified version of VHLT v34 by Uncle Mike designed for the Xash3D engine (bsp v31)

Free, Opensource, drop-in editor replacement for Hammer

List Maker automatically generates your maplist.txt and mapcycle.txt, it can be further used for making lists outside of Maplist making.

Valve Map Extractor, Decompile BSP maps for source (original version)

Joiner is a little application that reads in a template .vmf file and produces a new .vmf filled with supports based on your template and customised settings or config.

Older program used for editing entities within bsp maps

Modify the entities of a .map file by editing its text

Alternative to Hammer

C# library that will parse Quake/Half-Life MAP files

A tool for compiling maps from VMF to BSP format

Simple tool for converting world units into Hammer Units

Convert maps between Quake3 and Half-Life

Worldcraft Hammer Editor Map Compiler is a set of .bat files that make the process of compiling and developing .bsp maps from .vmf files an easy and fun task.

Valve Map Extractor modified version (Successor to VMEX)

Well made Russian Level Editor for GoldSrc

VSIF2VCD is a command line scenes.image extractor/decompiler.

this will pack every custom item into your map up to and including map over views

A small VMF to JSON parser

The only native Mac OS X level editor for Quake 1

A modified version of VBSP designed to greatly increase the maximum width and length of visleaves.

The open source, cross platform level editor for id Tech games.

Some Dev Texture guides to aid with level creation

Windows interface that frontends the compiling utilities

Convert .BSP files to .MAP files & Extract files from .PAK or .SIN files

Generate mazes for your level in GoldSrc

The Official Editor for Valve Games