Level Creation

converts Minecraft files into vmf files

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

Alternative to Hammer

Hack the colors in WorldCraft

OGLE is a rather amazing 3d tool that can extract shapes from 3d scenes being rendered on a computer screen

The only native Mac OS X level editor for Quake 1

Create Displacements for your maps

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

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

automatically finds mapfiles to compile in the directory it is run

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

Create a Map using color information through 2D

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

Basic Model viewer for GoldSrc

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

GUI Compiler for Half-Life Maps

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

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.

Creates .Res files for Source games running on a server

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

Older program used for editing entities within bsp maps

Collection of various bspconv exes i have found around the net

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.

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

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

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

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

Simple tool to change VTF versions from 7.5 to 7.4

Frontend wrapper for netvis

Collection of tools useful for mapping with GoldSrc

GUI Compiler for Source Maps

Convert maps between Quake3 and Half-Life

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

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

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

Small tool for generating Random Source Maps

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

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

Create a custom light style for your goldSrc maps

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

Batch compile Source and GoldSrc Maps

A tool to generate cl_leveloverview from BSP files

Batch compiler for automating Map Compilation

C# Library for working with BSP files (and other similar file formats).

Update to ZHLT

Quake2/3 map surface generator

Standalone Compiler for Source Maps

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

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.

Standalone Compiler for GoldSrc Maps

Adjust the light levels in a map

Generates Terrain for Games

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

Small prefab to help protect your map

Analyzes and reports on errors in the map compilation process

Decompiles some BSP maps with most support for Nightfire 007

Q3 .map to HL2 .vmf converter

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

Random SP map generator for Half-Life

Aids in nthe process of converting GoldSrc maps into Source maps

A tool for tweaking hammer settings and using multiple texture profiles

Tool for compiling Maps from hammer

ZHLT rebuilt and up to date with latest engine build

Edit the entities of Source and GoldSrc games

Batch files for killing the compile processes

Great little application for viewing skys used in game

Preview a map contained in a BSP file.

View and Edit the Entity information of a compiled BSP Map

Rotates selected entity types in a map

A GUI tool for embedding custom content

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

Compiler and Decompiler rolled into one tool

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

Tools supporting the creation of HDR Images for the Engine

Simple tool for converting world units into Hammer Units

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

Legacy compilation tools for quake

Useful tool for extracting the contents of BSP files

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