The Forgotten Realms Atlas (1990, ISBN 0-88038-857-9) was produced by Karen Wynn Fonstad and provided detailed maps of the Forgotten Realms, a setting of Dungeons & Dragons, as well as timelines of various novels set in the world.
The Forgotten Realms Interactive Atlas was developed by ProFantasy Software, the creators of Campaign Cartographer for Wizards of the Coast, who publish the Forgotten Realms RPG setting . The developers created vector version of the published maps for the Forgotten Realms Campaign Setting and included many new maps, including a globe ot the entire Forgotten Realms world, Abeir-Torril. There have been three updates published for the application that deliver over 800 maps. The maps were hyperlinked within a customised viewer, or could be accessed via an interactive globe.
The product was discontinued after selling through its entire print in its first year, perhaps because of an electronic rights transfer between Wizards of the Coast and Atari. It is still found to be purchased at prices over the original purchase price on eBay.
The license to the software has now reverted to the publisher, although the maps and other rights are owned by Wizards of the Coast