AD&D Toolkit (1e)

AD&D Toolkit is a web application that acts like a digital Character Sheet specifically for AD&D 1e. It automatically does dozens of calculations base on abilities, race, class, etc. The real power is how the character data integrates with DM tools(modules).

For instance, as your characters add loot items into inventory, live changes are made to character/party encumbrance and movement values. as another for instance, DMs can create Campaigns, Cities, and their associated Shops with Buyback % ranges. player inventory is automatically read into these shops. On a monthly(game-time) basis, Shops roll a new buyback rate within that range. then inventory can be "sold" to shops, automatically removing the item from character inventory and depositing coins.