epicGM
Cross-platform Game Master tools to track campaign notes, compendiums and a battle map.
4 Alternatives To epicGM
Aurora
Download apks from Google Play Store
DM
Easy to learn, object oriented language used by Dream Maker, the free game making environment of BYOND (Build Your Own Net Dream).
PlanarAlly
PlanarAlly is a web tool that adds virtual battlemaps with various extras to your D&D toolbox.
Rolisteam
Rolisteam helps you to manage tabletop role playing games with remote friends/players.