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...Support telnet protocol and support TLS encryption.
You can use this emulator to connect mainframes like HP nonstop server & etc.
Since it's written in QT so it's crossplatform (Windows, Mac OS X,Linux).
PCMan is an easy-to-use telnet client mainly targets BBS users formerly running under MS Windows. PCMan X is a newly developed, open-source and cross-platform version written with wxWidgets, supporting X Window, MS Windows, and Mac OS X.
BBMan is a SSH/SFTP/BBS/telnet Client. Free, opensource and multi-platform support (Windows/Linux/Mac). You can get some screenshots in http://bbman.sf.net/
A cross-platform Operating System object model, including a cross-platform object-oriented text-only shell specification and other applications based on this object model. This also may include a lightweight Operating System based on the same model.
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taTelnet is a cross-platform telnet program utilizing the wxWindows cross-platform GUI library. The motivation is that most telnet's (especially M$'s) don't work properly and what's worse is that you can't get the source code to fix it.