Level Creation

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

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

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

Collection of tools useful for mapping with GoldSrc

Creates .Res files for Source games running on a server

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

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

Windows interface that frontends the compiling utilities

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

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

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

Decompiles some BSP maps with most support for Nightfire 007

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

GUI Compiler for Half-Life Maps

Create an easily readable version of an FGD (commandline)

ZHLT rebuilt and up to date with latest engine build

Generate forests within your maps based on surface type

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

Frontend wrapper for netvis

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

Simple tool to change VTF versions from 7.5 to 7.4

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

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

GUI frontend for Source compiling tools

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

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

Small prefab to help protect your map

Free, Opensource, drop-in editor replacement for Hammer

Modified Compiler with support for large models and textures

Batch compile Source and GoldSrc Maps

Create Displacements for your maps

Small collection of obfuscation techniques for maps

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

The Official Editor for Valve Games

Small application for viewing map files, Superseded by crafty

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

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

A small VMF to JSON parser

Convert Worldcraft 3.3 Maps into the Radiant Format

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

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 id Tech games.

Compiler and Decompiler rolled into one tool

Standalone Compiler for Source Maps

Create a Map using color information through 2D

Hack the colors in WorldCraft

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

Rotates selected entity types in a map

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

GUI Compiler for Source Maps

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

Collection of various bspconv exes i have found around the net

Q3 .map to HL2 .vmf converter

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

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

Quake2/3 map surface generator

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

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

Alternative Map Editor for GoldSrc games

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

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

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

A tool for compiling maps from VMF to BSP format

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

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

Edit light values inside a Maps RAD file

Well made Russian Level Editor for GoldSrc

Small tool for generating Random Source Maps

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

Identifies and archives all dependencies for bsp files.

Collection of the main tools required for mapping with GoldSrc

Decrypt files that have been protected with BSPProtect (commandline)

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

Simple tool for converting world units into Hammer Units

Convert maps between Quake3 and Half-Life

Standalone Compiler for GoldSrc Maps

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

Older program used for editing entities within bsp maps

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

A collection of FGD's for GoldSrc