Level Creation

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

Analyzes and reports on errors in the map compilation process

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.

Valve Map Extractor modified version (Successor to VMEX)

Random SP map generator for Half-Life

Create Displacements for your maps

Inserts instances into a map

Free, Opensource, drop-in editor replacement for Hammer

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

Collection of the main tools required for mapping with GoldSrc

Editor used for 007 Nightfire map creation

This is a tool I made to create huge forests in Source maps (It should work with any source game!)

Hack the colors in WorldCraft

Simple tool for converting world units into Hammer Units

Basic Model viewer for GoldSrc

Convert maps between Quake3 and Half-Life

Decompiles some BSP maps with most support for Nightfire 007

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.

Modified Compiler with support for large models and textures

Alternative Map Editor for GoldSrc games

A tool for tweaking hammer settings and using multiple texture profiles

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

Preview a map contained in a BSP file.

The only native Mac OS X level editor for Quake 1

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.

Creates .Res files for Source games running on a server

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

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

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

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

Standalone Compiler for GoldSrc Maps

automatically finds mapfiles to compile in the directory it is run

Aids in nthe process of converting GoldSrc maps into Source maps

A GUI tool for embedding custom content

Older free for personal use version of Terragen for sculpting landscapes

Update to ZHLT

Small utility for helping protect bsp maps

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

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

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

Generates Terrain for Games

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

Small tool for generating Random Source Maps

Small collection of obfuscation techniques for maps

A tool for compiling maps from VMF to BSP format

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

Decrypt files that have been protected with BSPProtect (commandline)

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

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

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

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

Decompile Source .bsp files into Hammer .vmf files. Successor to VMEX

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

Great little application for viewing skys used in game

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

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

Q3 .map to HL2 .vmf converter

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.

Open-source library for reading and editing BSP files

Entspy is program for viewing and editing the entities of compiled map

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

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

Compiler and Decompiler rolled into one tool

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

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

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

Tools supporting the creation of HDR Images for the Engine

A nice tool made in 2015 which can come in handy sometimes when a bsp file is too large and wont work in BSPtoMAP.exe

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

Edit the entities of Source and GoldSrc games

Simple tool to change VTF versions from 7.5 to 7.4

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

Batch map compiler for GoldSrc

Standalone units converter

Create a custom light style for your goldSrc maps

converts Minecraft files into vmf files

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

Some Dev Texture guides to aid with level creation

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

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