PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port.
Engineering, testing and debugging of serial communication. Supports RS-232/422/423/485 as well as TCP/IP Client/Server/AutoSocket, UDP/IP Client/Server/PairSocket and USB Ser/HID. Optimized for simple command sets of e.g. embedded systems.
RealTerm is a terminal program specially designed for capturing, controlling and debugging binary and other difficult data streams. It is far better for debugging comms than HyperTerminal. It has no support for dialing modems, BBS, etc. - that is what HyperTerminal does.
CuteCom is a graphical serial terminal aimed mainly at hardware developers or other people who need a terminal to talk to their devices.
The project is no longer developed. Last version, 0.22.0, released in June 2009, can be still downloaded from the official website. It does not support terminal type emulation.
Putty is one of the Best Terminal Emulators available today. It Supports different types of Network Protocols such as SSH, FTP, SCP, Telnet etc. In Windows it is used as SSH Client to connect to Your Linux server or for some other purpose.