Level Creation

Well made Russian Level Editor for GoldSrc

Alternative Map Editor for GoldSrc games

GUI Compiler for Half-Life Maps

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

Random SP map generator for Half-Life

Editor used for 007 Nightfire map creation

Legacy compilation tools for quake

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

Windows interface that frontends the compiling utilities

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

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

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

Tools supporting the creation of HDR Images for the Engine

Collection of the main tools required for mapping with GoldSrc

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

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.

GUI frontend for Source compiling tools

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

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

RandMap is a random map generator for Half-Life

GUI Compiler for Source Maps

A tool to generate cl_leveloverview from BSP files

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

Alternative to Hammer

Decrypt files that have been protected with BSPProtect (commandline)

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

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

Standalone Compiler for GoldSrc Maps

Older program used for editing entities within bsp maps

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

A small collection of FGD's for Source

Valve Map Extractor modified version (Successor to VMEX)

Small collection of obfuscation techniques for maps

Convert Worldcraft 3.3 Maps into the Radiant Format

Edit the entities of Source and GoldSrc games

automatically finds mapfiles to compile in the directory it is run

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

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

Generate mazes for your level in GoldSrc

Modified Compiler with support for large models and textures

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

Generate forests within your maps based on surface type

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

Create a Map using color information through 2D

Q3 .map to HL2 .vmf converter

A tool for compiling maps from VMF to BSP format

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

Multi Game Map Editor that supports Half-life

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

Open-source library for reading and editing BSP files

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

Alternative to Hammer Editor for Level design

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

Rotates selected entity types in a map

Aids in nthe process of converting GoldSrc maps into Source maps

Simple tool for converting world units into Hammer Units

View and Edit the Entity information of a compiled BSP Map

OGLE is a rather amazing 3d tool that can extract shapes from 3d scenes being rendered on a computer screen

A collection of FGD's for GoldSrc

Generates Terrain for Games

Identifies and archives all dependencies for bsp files.

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

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

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

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

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

Some Dev Texture guides to aid with level creation

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

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

Batch compiler for automating Map Compilation

Adjust the light levels in a map

Tool for compiling Maps from hammer

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

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.

Collection of tools useful for mapping with GoldSrc

Alternative Map Editor mainly used for Quake 2 but compatible with GoldSrc

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

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

Batch map compiler for GoldSrc

Useful tool for extracting the contents of BSP files