Level Creation

Identifies and archives all dependencies for bsp files.

GUI Compiler for Half-Life Maps

Modified versions of the tools used in the Map compilation process

A tool for compiling maps from VMF to BSP format

Useful tool for extracting the contents of BSP files

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

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

Inserts instances into a map

Edit the entities of Source and GoldSrc games

Multi Game Map Editor that supports Half-life

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

Quake2/3 map surface generator

Alternative Map Editor for GoldSrc games

Collection of the main tools required for mapping with GoldSrc

Aids in nthe process of converting GoldSrc maps into Source maps

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

Decompile GoldSrc .bsp files into Hammer .map files.

Generate mazes for your level in GoldSrc

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

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

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

Decompiles some BSP maps with most support for Nightfire 007

Tools supporting the creation of HDR Images for the Engine

Frontend wrapper for netvis

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

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

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

Editor used for 007 Nightfire map creation

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

Standalone units converter

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

Create a Map using color information through 2D

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

Older free for personal use version of Terragen for sculpting landscapes

GUI Compiler for Source Maps

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

Legacy compilation tools for quake

Convert Worldcraft 3.3 Maps into the Radiant Format

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

Great little application for viewing skys used in game

Small prefab to help protect your map

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

Rotates selected entity types in a map

Valve Map Extractor modified version (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.

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.

Adjust the light levels in a map

Collection of tools useful for mapping with GoldSrc

Batch compiler for automating Map Compilation

Decrypt files that have been protected with BSPProtect (commandline)

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

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

Preview a map contained in a BSP file.

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

Simple tool for converting world units into Hammer Units

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

Create a custom light style for your goldSrc maps

Hack the colors in WorldCraft

Modified Compiler with support for large models and textures

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

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

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

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.

Collection of various bspconv exes i have found around the net

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

Lists maps for easy maplist.txt

The only native Mac OS X level editor for Quake 1

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

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

Custom DLL that supports transparency in Half-Life for Steam

Batch files for killing the compile processes

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

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

Update to ZHLT

Edit light values inside a Maps RAD file

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

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

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