Level Creation

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

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

Convert Worldcraft 3.3 Maps into the Radiant Format

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

Windows interface that frontends the compiling utilities

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

automatically finds mapfiles to compile in the directory it is run

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

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.

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

Compiler and Decompiler rolled into one tool

Alternative Map Editor for GoldSrc games

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

Batch compile Source and GoldSrc Maps

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

Small prefab to help protect your map

Standalone Compiler for Source Maps

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

Standalone Compiler for GoldSrc Maps

Decrypt files that have been protected with BSPProtect (commandline)

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

Collection of tools useful for mapping with GoldSrc

Contains 3 Tools, BSP_View, BSP_Tool and BSP_Slicer all of which perform useful tasks on Half-Life Maps

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

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

Useful tool for extracting the contents of BSP files

ZHLT rebuilt and up to date with latest engine build

Frontend wrapper for netvis

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

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 slimmed down copy of the Source SDK 2013 map compile tools

Valve Map Extractor modified version (Successor to VMEX)

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

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

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

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

Tools supporting the creation of HDR Images for the Engine

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

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

Simple tool to change VTF versions from 7.5 to 7.4

Small collection of obfuscation techniques for maps

Adjust the light levels in a map

Inserts instances into a map

This is the barebones program that GFlip uses as it's base

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

Q3 .map to HL2 .vmf converter

GUI Compiler for Half-Life 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.

Hack the colors in WorldCraft

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.

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

The Official Editor for Valve Games

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

Small utility for helping protect bsp maps

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

Basic Model viewer for GoldSrc

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.

A GUI tool for embedding custom content

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

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

Great little application for viewing skys used in game

Create Displacements for your maps

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

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

Preview a map contained in a BSP file.

Generate mazes for your level in GoldSrc

GUI Compiler for Source Maps

RandMap is a random map generator for Half-Life

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

Create a Map using color information through 2D

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

Preview a map contained in a BSP file.

Legacy compilation tools for quake

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

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

converts Minecraft files into vmf files

Create a custom light style for your goldSrc maps

Free, Opensource, drop-in editor replacement for Hammer

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

A small collection of FGD's for Source