WabbitEmu TI Calculator Emulator software is a free and open-source emulator that allows users to run TI-83, TI-83 Plus, TI-84 Plus, TI-84 Plus Silver Edition, TI-86, TI-89, and TI-89 Titanium calculators on their computers. It supports multiple platforms, including Windows, Mac, and Linux, and offers features such as screen capture, debugging tools, and ROM dumping. It also includes support for Z80 assembly programming and linking to a real calculator for data transfer.