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.
A Z88 operating system, desktop emulator, and developer tools.
A text mode audio oscilloscope.