Neuminds is an inventory app which tracks customers, sales, and receipts. It can backup and import to an SD card, import and export to a desktop-based barcode inventory system, and view realtime reports. It features a convenient user interface.
myBill is a money flow management utility. It can also be used to manage personal income/expenses.
The Horde task list manager.
A peer-to-peer network-based digital currency.