Noggit is a World of Warcraft map editor, based on an older version of WoWMapViewer. It allows you to edit the maptile files (called ADT files) with a set of tools using a 3D or a 2D view.
Noggit allows you to change the heightmap, paint textures, set impassible flags, paint AreaIDs and modify holes. You can also add, place, re-size, copy, paste, and delete models as you wish.
LordCraft is an MMO and MMORPG development and promotion community where members like yourself can create and develop your own game servers or even promote existing game servers, services and everything in between.