Level Creation

Frontend wrapper for netvis

Basic Model viewer for GoldSrc

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

Generate forests within your maps based on surface type

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

Decompile GoldSrc .bsp files into Hammer .map files.

A tool for compiling maps from VMF to BSP format

Edit light values inside a Maps RAD file

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

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

Small collection of obfuscation techniques for maps

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

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

Older program used for editing entities within bsp maps

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

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.

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

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

Small application for viewing map files, Superseded by crafty

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

converts Minecraft files into vmf files

Alternative to Hammer Editor for Level design

Alternative Map Editor for GoldSrc games

Older free for personal use version of Terragen for sculpting landscapes

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

Generates displacements that would usually take an extremely long time, or just be impossible to do in Hammer.

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

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

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

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

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

Convert Worldcraft 3.3 Maps into the Radiant Format

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.

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

Small utility for helping protect bsp maps

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

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

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

Create Displacements for your maps

Quake2/3 map surface generator

A tool to assist in the compiling of source engine maps

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

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

Decompiles some BSP maps with most support for Nightfire 007

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

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

automatically finds mapfiles to compile in the directory it is run

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

Modified Compiler with support for large models and textures

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

Simple tool for converting world units into Hammer Units

Create a Map using color information through 2D

Batch files for killing the compile processes

The Official Editor for Valve Games

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

Tools supporting the creation of HDR Images for the Engine

Convert maps between Quake3 and Half-Life

Create an easily readable version of an FGD (commandline)

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

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

Free, Opensource, drop-in editor replacement for Hammer

Batch map compiler for GoldSrc

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

GUI Compiler for Half-Life Maps

Multi Game Map Editor that supports Half-life

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.

A GUI tool for embedding custom content

Small prefab to help protect your map

A tool for tweaking hammer settings and using multiple texture profiles

Decrypt files that have been protected with BSPProtect (commandline)

Hack the colors in WorldCraft

Edit the entities of Source and GoldSrc games

Valve Map Extractor modified version (Successor to VMEX)

A small VMF to JSON parser

Open-source library for reading and editing BSP files

Preview a map contained in a BSP file.

Windows interface that frontends the compiling utilities

Generates Terrain for Games

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

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