HHTv5: Halo Hacking Tools v5
Rebuilds Xbox maps, recursive injection, Progress bar on injections, CE content will be converted on the fly (doesn’t support external sounds), Injects perfectly into single player maps and fixed a couple of bugs from previous versions! Recursive injection adds tags and everything so nothing gets replaced. Bitmaps, sounds and models are injected into their proper places!

HME: Halo Map Editor v1.2
Halo Map Item Editor is designed to quickly change Equipment, Vehicles, Projectiles and Weapons. One major feature that this program has the capability to doing is uncompressing maps. That feature right there can save a lot of time when working with compressed halo maps. Great program to make quick changes with.

HMT: Halo Map Tools v3.5
Halo Map Tools, currently at version 3.5, is a hacking tool for Bungie’s masterpiece first person shooter – Halo: Combat Evolved. HMT currently supports all versions of the game such as Xbox, PC Retail, PC Beta and PC Demo.

Features: Injection and extraction of all halo resource files, XML-plug in based tag editor, Batch resource extraction of all resource files and metadata, Metadata import/export with automatic ident and reflexive offset correction, Object placement and player spawn editing, Easy offset swapping, Search functions and map rebuilding!

It compares the modified map to an original map. Next it will create a patch that is small in file size. From there you can use PPF-O-Matic to apply the patch to your map!

This is a Windows GUI tool that applies patches to your original maps.

Spark Edit v3.02
Spark Edit is a map viewer and editor for Halo PC and Xbox. It was created to give modders insight into how the maps were constructed by the original developers.