Virtual TI is described as ', or "VTI," is a feature-rich graphing calculator emulator for Microsoft Windows, written in C++ by Rusty Wagner. It features a graphical debugger, a grayscale display, data transfer between computer and emulated calculator, black-link, parallel link and more' and is an app in the Education & Reference category. There are more than 10 alternatives to Virtual TI for a variety of platforms, including Windows, Android, Linux, Mac and Online / Web-based. The best alternative is WabbitEmu, which is both free and Open Source. Other great apps like Virtual TI are Emu48 (Free, Open Source), meta-calculator (Free), CEmu TI 84+ CE Emulator (Free, Open Source) and web2.0calc (Free).