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Tera Term is an open source free software terminal emulator (communication program) for MS-Windows. It emulates different types of terminals, from VT100 till VT382 and supports Telnet, SSH1, SSH2 and Serial Port connections. It also has built in Macro scripting language and the set of useful plugins.
The early versions of Tera Term were created by T. Teranishi from Japan. At the time it was one of the only freely available terminal emulator effectively supporting Japanese language. Development of Tera Term stopped in the late 1990s at version 2.3. In 2002 Ayera Technologies released TeraTerm Pro 3.1.3 supporting SSH2, however Ayera Technologies neither made their source open, nor provided technical support.
In 2004 Yutaka Hirata, a software designer from Japan, restarted development of the open source version of Tera Term. He added his own implementation of SSH2 and lots of new features on top of what was part of version 2.3. A complete list of them is published on Tera Term Support forum.
To avoid confusion with version numbers and to indicate that Tera Term developed by Yutaka is more recent than version 3.1.3 from Ayera Technologies, it was decided to give this branch of Tera Term version numbers starting 4.xx.
In January 2005, Boris Maisuradze together with Yutaka Hirata started the Tera Term Support forum where they answer questions from Tera Term users. Posting in this forum is the best way to suggest new features for Tera Term or propose new commands for the Tera Term Macro language.
Since 2007, Tera Term is maintained by Tera Term Project (Japanese Developer) team as open source software.
The latest versions of Tera Term are compatible with OS Windows 95 and later and are available for downloading from the Download section of this web site. The source code on the application can be downloaded from Tera Term Project pages on osdn.jp.