dolphin emulator

Jagacy VT is a VT100/VT220 emulator and screen-scraping library using 100% Java.

A 3270 terminal emulator

Put simple - a mouse emulator

Data Communication Test Software - Modbus TCP Master Emulator

Data Communication Test Software - Modbus RTU/ASCII Slave Emulator

Rock-solid terminal emulator for encrypted Secure Shell (SSH1; SSH2)

If you already tried to install an emulator, you know that the main problem

WAP Proof is an emulator of a WAP browser for Microsoft Windows.

Network Traffic Emulator generates traffic to stress test routers, firewalls.

Cxbx may not actually be an emulator to some people but everyone considers it.