I've found an app called ZOC terminal.

The ZOC telnet client, secure shell client and terminal emulator lets you to easily connect to hosts and mainframes via telnet, secure shell (SSH/SSH2) modem, serial cable or isdn.

It is a very powerful client nearly everything is configurable, it has keyboard mappings and is scriptable with REXX (triggers), also you can do things like aliases.

Also you can do everything with text as you can execute windows programs on received texts.

This client is very powerful and I connected to Achaea with it and it is amazed me!

Cons: possibly steep learning curve (learning REXX scripting)

Some basic features:
- User Interface
- Tabbed sessions
- Overview screen to show thumbnails of all open sessions
- "Colorful tabs" feature to tint user interface elements with different colors depending on which host is connected
- Host directory (with full option set for each entry and automatic login)
- User button bar to map texts, scripts, phone book entries, external protocols and shell commands to buttons (incl. button assistant)
- F-Macro keys for texts, scripts, phone book entries, external shell commands, etc.
- Local typing (entry field with history e.g. to type commands)
- Completely remappable keyboard
- Various logging and scroll back functions
- Keyboard mode for bbs door programs (doorway mode)

Runs on Win and Mac OSX

Edit: ZOC SITE

That said, it may be the best option for macs.

80$? cough torr cough ent cough migth solve the problem.

Anyways I've found some NASTY stuff in ZOC client. Eg: I can switch back to RAW mode from telnet mode and then I receive interesting character sequences and line endings, might be good for hacking. Also REXX-script is as elegant as Lua or Ruby stuff. Hrmm.... I will do some trial and error stuff with ZOC soon, will try to set up aliases and REXX triggers.

Also I see some possibility to use my own text processing modules in ZOC (written in freepascal.) eg: fully processing who lists, etc using the ZOC shell...

.... ZOC is definitely for geeks.

Edit: I may try out to write some nasty combat-AI in freepascal and use it through the ZOC shell, little chunks of C functions might work as well (compiled into win32 exes)