Level Creation

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

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

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

A tool for compiling maps from VMF to BSP format

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.

Identifies and archives all dependencies for bsp files.

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

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

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

Tool for compiling Maps from hammer

Edit light values inside a Maps RAD file

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

Collection of the main tools required for mapping with GoldSrc

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

Collection of tools useful for mapping with GoldSrc

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

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.

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

Quake2/3 map surface generator

Batch map compiler for GoldSrc

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

Preview a map contained in a BSP file.

Free, Opensource, drop-in editor replacement for Hammer

A GUI tool for embedding custom content

ZHLT rebuilt and up to date with latest engine build

Generates Terrain for Games

Create Displacements for your maps

Collection of various bspconv exes i have found around the net

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

Decompiles some BSP maps with most support for Nightfire 007

Convert Worldcraft 3.3 Maps into the Radiant Format

Small tool for generating Random Source Maps

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

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

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.

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

Small application for viewing map files, Superseded by crafty

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

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

Random SP map generator for Half-Life

Generate mazes for your level in GoldSrc

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

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

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

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

Simple tool to change VTF versions from 7.5 to 7.4

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

The only native Mac OS X level editor for Quake 1

Standalone Compiler for Source Maps

Alternative Map Editor for GoldSrc games

automatically finds mapfiles to compile in the directory it is run

Batch files for killing the compile processes

The Official Editor for Valve Games

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

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

GUI frontend for Source compiling tools

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

Basic Model viewer for GoldSrc

View and Edit the Entity information of a compiled BSP Map

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

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

This program adds custom content to a BSP. It is a GUI version of Valve's bspzip.

Batch compile Source and GoldSrc Maps

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

RandMap is a random map generator for Half-Life

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

Useful tool for extracting the contents of BSP files

Standalone units converter

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

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

Great little application for viewing skys used in game

Tools supporting the creation of HDR Images for the Engine

Valve Map Extractor modified version (Successor to VMEX)

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

Windows interface that frontends the compiling utilities

A tool for tweaking hammer settings and using multiple texture profiles

Simple bindings for debugging maps

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

Small utility for helping protect bsp maps