Browse free open source Telnet software and projects below. Use the toggles on the left to filter open source Telnet software by OS, license, language, programming language, and project status.

  • Top-Rated Free CRM Software Icon
    Top-Rated Free CRM Software

    216,000+ customers in over 135 countries grow their businesses with HubSpot

    HubSpot is an AI-powered customer platform with all the software, integrations, and resources you need to connect your marketing, sales, and customer service. HubSpot's connected platform enables you to grow your business faster by focusing on what matters most: your customers.
  • ConnectWise Cybersecurity Management for MSPs Icon
    ConnectWise Cybersecurity Management for MSPs

    Software and support solutions to protect your clients’ critical business assets

    ConnectWise SIEM (formerly Perch) offers threat detection and response backed by an in-house Security Operations Center (SOC). Defend against business email compromise, account takeovers, and see beyond your network traffic. Our team of threat analysts does all the tedium for you, eliminating the noise and sending only identified and verified treats to action on. Built with multi-tenancy, ConnectWise SIEM helps you keep clients safe with the best threat intel on the market.
  • 1
    RealTerm: Serial/TCP Terminal

    RealTerm: Serial/TCP Terminal

    Serial and TCP terminal for engineering and debugging

    Serial terminal program for engineering. Ideal for development, reverse engineering, debugging, datalogging and capture, and automatic test. The website is a comprehensive manual for Realterm. It has an comprehensive ActiveX/COM automation support so it can be used a serial component by other programs. An extensive commandline interface supports batch files and simple automatic test programming. Commands can be sent to running instances, and commands can be stored and run in files. [ActiveX](http://realterm.sourceforge.net/index.html#ActiveX_Interface) and [Command Line](http://realterm.sourceforge.net/index.html#Command_Line_Parameters) commands are well documented. Sourceforge major releases are only made occasionally. To follow development versions see News and subscribe.
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    Downloads: 3,014 This Week
    Last Update:
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  • 2
    Null-modem emulator

    Null-modem emulator

    The virtual serial port driver for Windows.

    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.
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    Downloads: 2,514 This Week
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  • 3
    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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    Downloads: 445 This Week
    Last Update:
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  • 4

    SyncTERM

    Cross-platform BBS (ANSI) Terminal

    A cross-platform ANSI-BBS terminal designed to connect to remote BBSs via telnet, rlogin, or SSH. Supports ANSI music and the IBM charset when possible. Will run from a console, under X11 using XLib, or using SDL.
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    Downloads: 157 This Week
    Last Update:
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  • AlertBot: Website Monitoring of Uptime, Performance, and Errors Icon
    AlertBot: Website Monitoring of Uptime, Performance, and Errors

    For IT Professionals and network adminstrators looking for a web application monitoring solution

    AlertBot monitors your website's full functionality around the clock so you can focus your time on more important things.
  • 5

    tn5250

    5250 telnet client

    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
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    Downloads: 108 This Week
    Last Update:
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  • 6
    TinTin++ Mud Client

    TinTin++ Mud Client

    A MUD client for Android, iOS, Linux, Mac OS X and Windows

    TinTin++ is a console mud client for any type of text mud or bbs. The mud client's main assets are an easy to learn scripting language, triggers, automapping, and a split screen interface to separate mud output from client input. Installation instructions for Android, iOS, and several other operating systems are available on the website. https://tintin.mudhalla.net
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    Downloads: 82 This Week
    Last Update:
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  • 7
    Qodem Terminal Emulator
    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.
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    Downloads: 36 This Week
    Last Update:
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  • 8
    KiTTY

    KiTTY

    Lightweight, open-source SSH/telnet client

    KiTTY is a lightweight, open-source SSH/telnet client and terminal emulator based on PuTTY, designed for use in Windows environments. It is primarily used for remote connections via SSH, Telnet, Rlogin, and serial protocols, making it an essential tool for system administrators, network engineers, and developers who need to manage remote servers or devices. KiTTY extends PuTTY's functionality with a variety of enhancements, such as session management, automated password handling, and portable executables, providing a more convenient and customizable experience. Its minimalistic design ensures fast performance, while its extended features cater to both basic and advanced users who require reliable, secure, and efficient remote access tools.
    Downloads: 42 This Week
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  • 9
    A nearly full options telnet 5250 terminal emulator. It includes a programmers API to improve 5250 panels by adding field popups, hints, ...
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    Downloads: 9 This Week
    Last Update:
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  • Precoro helps companies spend smarter Icon
    Precoro helps companies spend smarter

    Fully Automated Process in One Tool: From Purchase Orders to Budget Control and Reporting.

    For minor company expenses, you might utilize a spend management solution or track everything in spreadsheets. For everything more, you'll need Precoro. We help companies achieve procurement excellence and budget efficiency by building transparent, predictable, automated spending workflows.
  • 10
    Dave's Telnet

    Dave's Telnet

    Windows Terminal Emulator

    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.
    Downloads: 9 This Week
    Last Update:
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  • 11
    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.
    Downloads: 8 This Week
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  • 12
    ARTT

    ARTT

    Tintin++ scirpts for MUD (mmorpg)

    www.abandonedrealms.com http://tintin.sourceforge.net/ Enjoy MMORPG in it's purest form, a shared text based adventure like the one everquest was fashioned after. www.abandonedrealms.com
    Downloads: 14 This Week
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  • 13
    ICMP Shell (ISH) is a telnet-like protocol. It allows users to connect to a remote host and to open a shell using only ICMP to send and receive data. ICMP Shell was written in C for the UNIX environment.
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    Downloads: 11 This Week
    Last Update:
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  • 14

    MudMaster 2k6

    Up to date MUD client evolved from the original MudMaster

    Next generation MudMaster GUI. Win32 GUI MUD client with triggers, aliases, scripting, and DLL plugins for extra features such as displaying chat and other in game channels in a separate window. Now supports a multi-line, variable width status bar and multiple interacting windows. User customized script buttons in the status bar let you add mouse click functionality. Has web interactivity via the /showMeViaWeb command. Mudmaster 2k6 also can be run on Linux under WINE. Questions? Ask them in our Sourceforge Forums ( https://sourceforge.net/p/mm2k6/discussion/ ) More at http://mm2k6.sourceforge.net/mm2k6/
    Downloads: 3 This Week
    Last Update:
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  • 15

    TFTPTerminal

    terminal program written in vb 2010

    A terminal client written in vb 2010 express
    Downloads: 8 This Week
    Last Update:
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  • 16
    This project is no longer maintained at SourceForge. Please see http://code.google.com/p/libcli for updates.
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    Downloads: 6 This Week
    Last Update:
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  • 17

    KildClient

    KildClient is a powerful MUD client with a built-in Perl interpreter

    KildClient is a mud client using the GTK toolkit. Its main feature is the support of Perl scripting. Other standard features of mud clients (triggers, gags, macros, etc.) are also supported.
    Downloads: 2 This Week
    Last Update:
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  • 18
    quardCRT

    quardCRT

    quardCRT is a terminal emulation software.

    quardCRT is a terminal emulation software that supports multiple terminal protocols, can be used across platforms without dependencies, and has a completely consistent user experience on windows/linux/mac. It supports multiple tabs and history management.
    Downloads: 5 This Week
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  • 19
    Enables access to SSH Shell and File Transfer services using a web browser. Java Servlet application uses pure HTML to provide access to SSH services.
    Downloads: 4 This Week
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  • 20
    FuTTY

    FuTTY

    FireEgl's PuTTY -- FuTTY!

    FuTTY is a fork of PuTTY and PuTTYTray.
    Downloads: 3 This Week
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  • 21
    MudPRO: An advanced client for the online game MajorMUD
    Downloads: 3 This Week
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  • 22
    Pueblo/UE
    The Pueblo MUD/MUSH/MOO/etc client, originally developed by Chaco Communications. Updated, improved, and open source! The client provides access to "virtual worlds", supporting HTML, colour, forms, and images.
    Downloads: 3 This Week
    Last Update:
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  • 23

    hwmonitor

    Show server load-average chart and run pre-define command remotely

    I'm a HW Support and used cacti, zabbix, but they are too "strong", sometimes I just want to know server "worked fine", and show me a basicly load-average chart, that's enough. And the other hand, I need run command (like: "top", "iostat", "date" etc.) remotely and show it out to the webpage. The hwmonitor(writen in C) is a simple daemon, you can define some command-name(like: show_top= top -b -n1), telnet to this daemon and input your def-command(like: show_top), hwmonitor will return the info. And hwclient(include in this project, writen in C) connect to hwmonitor, input a define command-name to get server load-average and IO-idle each 60 seconds(you can change it) into a text file. hwgraphic (include in this project, writen in PHP) read the text file(generated by hwclient) and show the load-average chart and IO-idle chart.
    Downloads: 3 This Week
    Last Update:
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  • 24

    Net Tools for Development

    A collection of network-oriented tools

    This Eclipse RCP application contains several free, useful network tools. Among others: - Standard network tools: ping, netstat, traceroute, nslookup - A port scanner - Servers: HTTP, FTP, TFTP servers - an HTTP proxy - A TCP tunnel - Clients: FTP client, embeddable PuTTY (for Windows only)
    Downloads: 1 This Week
    Last Update:
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  • 25
    FreeHost3270 is a complete 3270-to-web solution, providing single-point deployment of legacy 3270 applications to unlimited clients. It delivers either a java applet-based TN3270 emulator, or a stand alone application with rich GUI.
    Downloads: 2 This Week
    Last Update:
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