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tn5250 emulates a 5250 terminal or printer over telnet, for connecting to IBM Power Systems, iSeries and AS/400 computers running IBM i, i5/OS and OS/400. It runs on any Unix or Windows system.
Note that this project is now on GitHub at https://github.com/tn5250/tn5250
The Clans was a popular game written for online BBSes back in the day of their great popularity. It is a text-based game featuring inter-BBS communications. It was written initially for Turbo C++, but has been ported to gcc and MSVC
Qodem is a a terminal emulator that resembles the BBS-era Qmodem. Includes phonebook, scrollback, capture, X/Y/Zmodem, Kermit, ANSI (+ music) / Avatar / VT102 / Linux emulation, Unicode, and keyboard macros. Connects over serial, ssh, telnet, rlogin.
dtelnet: A Free Telnet Client for Windows 16/32/64
Emulates many terminal types 'linux,xterm,rxvt,konsole,vt100,vt320,vt420' (xterm[-256color] is the preferred), talks protocols 'telnet' and 'login'.
Many customization options available.
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The Null-modem emulator (com0com) is a kernel-mode virtual serial port driver for Windows. You can create an unlimited number of virtual COM port pairs and use any pair to connect one COM port based application to another. The HUB for communications (hub4com) allows to receive data and signals from one COM or TCP port, modify and send it to a number of other COM or TCP ports and vice versa.
ExtraPuTTY - fork of putty 0.67. (Add win32 API,shortcuts for pre-defined command,can use files instead of the registry,auto-reconnect, scripting a session with lua,integrates FTP,TFTP,Ymodem,Xmodem transfert protocols, integrates cygwin, zmodem, session manager,hyper link projects and others ...)
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LtTTY is a windows ssh client based on PuTTY. It has some Expanded functionalities: stored the settings information at local file(not Registry); easy to manage multi-window; transparentable window; and so on ... I think it will be useful.
...The aftp tool is a good example on how to use the library. You need FTP functionality in your software? Use the aftp library! Now also atelnet(d), a client and server telnet between MS-Windows (server) and Linux.
OpenSource mud client designed to work on both windows,linux and MAC OS X. Written in Gtk+ and C with SQLLite, Python, MSP, MXP, HTML, and ZMP support. Provides plugin support, automapper functionality, triggers, aliases and macros.
C library which allows to easily setup a VT52/VT100/ANSI/ECMA048/AVATAR telnet server. Can handle multiple clients with a simple API, main features: minimal bandwidth consumption, optimized network architecture, console color support.
SWAL is a program that can launch as a service (or standalone) and monitor other services and control other programs. Written in C++ and might have some .NET components (planning on a linux port)
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.
Atani Software has a primary focus of developing games for various platforms and also try to keep the good old BBS' alive with releases of door games, etc.
A GTK+ MUD client with support for MCCP, MXP, support for the zChat and MudMaster peer-to-peer chat protocols, the MUD sound protocol (MSP), Telnet GA support, regexp trigger support, aliases, Perl and Python plugin support.
Clio is a MUD client specifically for MUD2 (a direct descendant of Trubshaw & Bartle's original MUD), but which can also be used with any MUD. Features include ANSI colour, colour logging, scroll back, function keys, command editing, and command history.
MMC, the MUD client for UNIX and Win32. Main features: aliases, hotkeys, triggers list ordered by priority, MCCP, delayed/periodic commands, perl5 is used as a scripting language, writing sophisticated triggers and aliases is now simple and easy, and etc.