Level Creation

A GUI tool for embedding custom content

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

Create a custom light style for your goldSrc maps

Modified Compiler with support for large models and textures

Collection of various bspconv exes i have found around the net

Legacy compilation tools for quake

Simple tool to change VTF versions from 7.5 to 7.4

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

Decompile GoldSrc .bsp files into Hammer .map files.

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

A tool for compiling maps from VMF to BSP format

Edit light values inside a Maps RAD file

Tool for compiling Maps from hammer

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

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

Standalone Compiler for GoldSrc Maps

Older program used for editing entities within bsp maps

Small application for viewing map files, Superseded by crafty

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

The only native Mac OS X level editor for Quake 1

Analyzes and reports on errors in the map compilation process

Collection of the main tools required for mapping with GoldSrc

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

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

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

A collection of FGD's for GoldSrc

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

Older free for personal use version of Terragen for sculpting landscapes

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.

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

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

A small VMF to JSON parser

Batch files for killing the compile processes

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

Batch compile Source and GoldSrc Maps

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.

Decompiles some BSP maps with most support for Nightfire 007

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

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

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

Hack the colors in WorldCraft

Generate forests within your maps based on surface type

BSP2OBJ is a command-line utility capable of converting Quake, Quake 2 and Half-Life map files into OBJ meshes

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

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

A small collection of FGD's for Source

A tool for tweaking hammer settings and using multiple texture profiles

Tools supporting the creation of HDR Images for the Engine

Simple tool for converting world units into Hammer Units

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

Create an easily readable version of an FGD (commandline)

Random SP map generator for Half-Life

Multi Game Map Editor that supports Half-life

Creates .Res files for Source games running on a server

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

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

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

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

Inserts instances into a map

Q3 .map to HL2 .vmf converter

Compiler and Decompiler rolled into one tool

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

Useful tool for extracting the contents of BSP files

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

Small prefab to help protect your map

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

Rotates selected entity types in a map

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

Frontend wrapper for netvis

converts Minecraft files into vmf files

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

Small collection of obfuscation techniques for maps

Standalone units converter

Valve Map Extractor modified version (Successor to VMEX)

Alternative Map Editor for GoldSrc games

The Original official mapping utility from Valve

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

Create Displacements for your maps

Batch compiler for automating Map Compilation

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