Dundjinni

Dundjinni is a full-featured fantasy map creation program. It allows users to create walls and floors, place objects, insert text, and more.

It boasts an intuitive interface and an impressive selection of objects and textures (over 190 images). It also allows you to author d20 adventures in a simple yet elegant way.

It has monster stats from Core Rulebook 3 (MM), Privateer Press's Monsternomicon, Green Ronin's Book of Fiends, The Inner Circle's Denizens of Avadnu, and Monte Cook's Arcana Unearthed and Eldritch Might series. It has 33 character and monster tokens from Reaper Miniatures and over 100 character and monster tokens from Denizens of Avadnu.