Tera Term (alternatively TeraTerm) is an open-source, free, software implemented, terminal emulator (communications) program. It also has a built-in macro scripting language and a few other useful plugins. It supports telnet, SSH 1 & 2 and serial port connections.

It emulates different types of PC terminals, from DEC VT100 to DEC VT382. Tera Term (rarely TeraTerm) is an open-source, free, software implemented, terminal emulator (communications) program. It also has a built-in macro scripting language (supporting Oniguruma regular expressions) and a few other useful plugins. It emulates different types of computer terminals, from DEC VT100 to DEC VT382. Now TTSSH supports SSH2 protocol (Original version supports SSH1). Tera Term is open source free software terminal emulator supporting UTF-8 protocol.

Tera Term is Tera Term Pro 2.3 succession version and is being officially recognized by the original author. This software is open source software under BSD License.This is Tera Term Pro 2.3 succession version and is being officially recognized by the original author. TeraTerm Project would have been developed terminal emulator 'Tera Term' and SSH module 'TTSSH'.

Teraterm official website