Level Creation

A tool to assist in the compiling of source engine maps

The Official Editor for Valve Games

Rotates selected entity types in a map

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

Convert Worldcraft 3.3 Maps into the Radiant Format

A tool for tweaking hammer settings and using multiple texture profiles

Random SP map generator for Half-Life

Edit light values inside a Maps RAD file

Compiler and Decompiler rolled into one tool

View and Edit the Entity information of a compiled BSP Map

Edit the entities of Source and GoldSrc games

Open-source library for reading and editing BSP files

The only native Mac OS X level editor for Quake 1

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.

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

A tool to generate cl_leveloverview from BSP files

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

Great little application for viewing skys used in game

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

Create Displacements for your maps

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.

Alternative to Hammer Editor for Level design

Collection of tools useful for mapping with GoldSrc

Standalone Compiler for GoldSrc Maps

Batch map compiler for GoldSrc

Preview a map contained in a BSP file.

A small VMF to JSON parser

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

Create an easily readable version of an FGD (commandline)

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

Alternative Map Editor for GoldSrc games

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

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

Decrypt files that have been protected with BSPProtect (commandline)

A GUI tool for embedding custom content

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

Older free for personal use version of Terragen for sculpting landscapes

RandMap is a random map generator for Half-Life

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

Generates Terrain for Games

This is an modified version of VHLT v34 by Uncle Mike designed for the Xash3D engine (bsp v31)

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

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

Frontend wrapper for netvis

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

A small collection of FGD's for Source

Legacy compilation tools for quake

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

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

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

Well made Russian Level Editor for GoldSrc

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

Small collection of obfuscation techniques for maps

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

Analyzes and reports on errors in the map compilation process

Collection of various bspconv exes i have found around the net

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

Collection of the main tools required for mapping with GoldSrc

Hack the colors in WorldCraft

ZHLT rebuilt and up to date with latest engine build

Creates .Res files for Source games running on a server

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

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

Batch files for killing the compile processes

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

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

Simple tool to change VTF versions from 7.5 to 7.4

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

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

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

GUI frontend for Source compiling tools

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

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

Editor used for 007 Nightfire map creation

Generate forests within your maps based on surface type

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

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

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

GUI Compiler for Source Maps