Level Creation

Useful tool for extracting the contents of BSP files

Older program used for editing entities within bsp maps

GUI Compiler for Half-Life Maps

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

Decompile GoldSrc .bsp files into Hammer .map files.

Generate mazes for your level in GoldSrc

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

Batch compile Source and GoldSrc Maps

Legacy compilation tools for quake

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

Valve Map Extractor modified version (Successor to VMEX)

Alternative to Hammer

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

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

Quake2/3 map surface generator

Small utility for helping protect bsp maps

Standalone units converter

Simple bindings for debugging maps

Hack the colors in WorldCraft

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

This is Badger. It's a tool to generate levels for Half-Life 2, Black Mesa.

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

Removes entity names from your map and helps prevent people from stealing your work

Decompiles some BSP maps with most support for Nightfire 007

Batch map compiler for GoldSrc

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

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

This is a tool for showing leaks in a map made in WordCraft.

This program is a little tool for those that like the Half-Life game, with
its amazing kind of enemies and weapons.

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

Decrypt files that have been protected with BSPProtect (commandline)

Some Dev Texture guides to aid with level creation

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

A tool to generate cl_leveloverview from BSP files

Open-source library for reading and editing BSP files

Windows interface that frontends the compiling utilities

Small prefab to help protect your map

Tools supporting the creation of HDR Images for the Engine

Editor used for 007 Nightfire map creation

Identifies and archives all dependencies for bsp files.

Convert Worldcraft 3.3 Maps into the Radiant Format

Custom DLL that supports transparency in Half-Life for pre Steam WON

Convert maps between Quake3 and Half-Life

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

A GUI tool for embedding custom content

Quake Army Knife, multi-purpose tool for games based on or similar to the Quake engine

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

Q3 .map to HL2 .vmf converter

C# Library for working with BSP files (and other similar file formats).

Alternative Map Editor for GoldSrc games

GUI Compiler for Source Maps

Inserts instances into a map

Another great tool from RedMser which tracks Hammers compilation progress even when it seems to hang

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.

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

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

Alternative to Hammer Editor for Level design

Modified Compiler with support for large models and textures

A small VMF to JSON parser

A collection of FGD's for GoldSrc

hlfix is a tool that converts Worldcraft/VHE format files (.rmf) to standard .map files

Custom DLL that supports transparency in Half-Life for Steam

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

Small application for viewing map files, Superseded by crafty

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

Small tool for generating Random Source Maps

This program will create a half-life2 displacement map from a heightmap image.

automatically finds mapfiles to compile in the directory it is run

Create an easily readable version of an FGD (commandline)

Free, Opensource, drop-in editor replacement for Hammer

Find, display, and optionally round floating point plane coordinates in Source engine .vmf files.

Frontend wrapper for netvis

HammerMate is a tool I use to save and load the wad texture list for Hammer 3.4 / 3.5.

Adjust the light levels in a map

This tool is used to create the smallest convex brush containing all points in the input file. Input file can be .smd (use its vertexes), .map (brushes and point entities) or .pts file.

Generate a random map for Half-Life based on criteria you set in the application

Simple tool to change VTF versions from 7.5 to 7.4

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

Modified versions of the tools used in the Map compilation process

Displays all options for, and facilitates, compiling maps for Nightfire