go49g+ is described as 'Commercial HP 49G+ / 50G emulator for android' and is an app in the Education & Reference category. There are six alternatives to go49g+ for a variety of platforms, including Windows, Linux, Android, PlayBook and Windows Mobile. The best alternative is WabbitEmu, which is both free and Open Source. Other great apps like go49g+ are Emu48 (Free, Open Source), Virtual TI (Free), TilEm (Free, Open Source) and AlmostTI (Free Personal).
Virtual TI, 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.
AlmostTI turns your Android device into a Texas Instruments graphing calculator. It fully emulates TI-84+, TI-84+ Silver Edition, TI-83+, TI-83+ Silver Edition, TI-73, TI-83, TI-85, TI-86, TI-82, and TI-81 calculators made by Texas Instruments.