These are tools that will allow you to create your own maps for the game.
With them, you will be able to place terrain like earth, rock, water and lava, but also to place rooms and other things, like Dungeon hearts and Creatures.
Those are tools for maintaining DK2 file catalogues and archives, such as WAD or SDT files.
If you wish to change or extract something else from the game, try looking here.
Please report any problems or dead links.
Read README file before using any of the tools!