goSerial is described as 'A Universal Binary for simple serial terminal emulation. Note: Does not support VT terminal type emulation'. There are five alternatives to goSerial for Mac, Windows, Linux, iPhone and iPad. The best alternative is Zterm, which is free. Other great apps like goSerial are CoolTerm (Free), Terminal by Bra@y++ (Free), Get Console (Paid) and Serial (Paid).
CoolTerm is a simple serial port terminal application (no terminal emulation) that is geared towards hobbyists and professionals with a need to exchange data with hardware connected to serial ports such as servo controllers, robotic kits, GPS receivers, microcontrollers, etc.
Terminal is a simple serial port (COM) terminal emulation program. It can be used for communication with different devices such as modems, routers, embedded uC systems, GSM phones,... It is very useful debugging tool for serial communication applications.
Get Console is the first ipad and iphone serial port terminal application providing serial terminal connectivity without jailbreaking. The app store description advises it works on network devices, but offers a standard VT100 emulation.