Level Creation

Alternative to Hammer Editor for Level design

Create a Map using color information through 2D

Map Resource Extractor (MRE) is a small program that reads the VMF, and only copies the content that has been used in the map.

Hack the colors in WorldCraft

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

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

Basic Model viewer for GoldSrc

Collection of various bspconv exes i have found around the net

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

Batch files for killing the compile processes

Random SP map generator for Half-Life

RandMap is a random map generator for Half-Life

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

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

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.

Q3 .map to HL2 .vmf converter

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

Create an easily readable version of an FGD (commandline)

Older program used for editing entities within bsp maps

Small utility for helping protect bsp maps

Collection of tools useful for mapping with GoldSrc

Generate forests within your maps based on surface type

A tool to generate cl_leveloverview from BSP files

Legacy compilation tools for quake

ZHLT rebuilt and up to date with latest engine build

Similar to ZHLT for Goldsrc, it speeds up compilation for Source

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

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

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

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

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

Standalone Compiler for Source Maps

Useful tool for extracting the contents of BSP files

Standalone units converter

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

Modified versions of the tools used in the Map compilation process

Compiler and Decompiler rolled into one tool

Older free for personal use version of Terragen for sculpting landscapes

Decompile GoldSrc .bsp files into Hammer .map files.

Edit light values inside a Maps RAD file

Analyzes and reports on errors in the map compilation process

Well made Russian Level Editor for GoldSrc

This program will help you to manage all your customs files, for your maps , texture, models or mods

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

Open-source library for reading and editing BSP files

Quake2/3 map surface generator

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

automatically finds mapfiles to compile in the directory it is run

Generate mazes for your level in GoldSrc

Great little application for viewing skys used in game

Simple tool to change VTF versions from 7.5 to 7.4

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

Lists maps for easy maplist.txt

The Official Editor for Valve Games

converts Minecraft files into vmf files

A small VMF to JSON parser

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

Create a custom light style for your goldSrc maps

Aids in nthe process of converting GoldSrc maps into Source maps

Modified Compiler with support for large models and textures

This is a modified VBSP that does not delete prop_static entities using models with propdata

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.

integrates into Hammer and allows conversion of Source Engine units into metric or imperial units.

Decompiles some BSP maps with most support for Nightfire 007

View and Edit the Entity information of a compiled BSP Map

Small collection of obfuscation techniques for maps

This tool blocks Hammer from converting plane coordinates to integers when exporting .map file and thus enables Hammer to output the original floating point coordinates.

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

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

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

Tool for compiling Maps from hammer

GUI Compiler for Half-Life Maps

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

Convert maps between Quake3 and Half-Life

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

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

Multi Game Map Editor that supports Half-life

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

Standalone Compiler for GoldSrc Maps

fixes the annoying Navigation Mesh was built using a different version of this map