PuTTY is described as «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» and is a leading terminal emulator in the os & utilities category. There are more than 50 alternatives to PuTTY for a variety of platforms, including Windows, Linux, Mac, Android and iPhone. The best alternative is OpenSSH, which is both free and Open Source. Other great apps like PuTTY are KiTTY, MobaXterm, mRemoteNG and Tabby Terminal.PuTTY alternatives are mainly Terminal Emulators but may also be SSH Clients or Remote Desktop Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of PuTTY.