A living museum of 12 classic DOS-era bulletin board systems — preserved and accessible from your browser.
SYSTEMS: — / 12 online checking…

// available systems

// how it works

Each system runs as a genuine MS-DOS 6.22 virtual machine under QEMU, managed by systemd on a Debian 12 server. A tcpser modem emulator bridges the VM’s COM1 port to a telnet listener. fTelnet connects your browser to that telnet port via WebSocket, rendering authentic ANSI/CP437 output. 
  Browser → fTelnet (WebSocket) → cdbbs.midremixed.com:PORT
                                        ↕ tcpser (modem emulation)
                                   QEMU qemu-system-i386 (32 MB RAM)
                                        ↕ COM1
                                   MS-DOS 6.22 + BBS software

You can also connect directly via any telnet client:
telnet cdbbs.midremixed.com <port>
Carrier Detected BBS — cdbbs.midremixed.com
A preservation project. All BBS software is presented for historical and educational purposes.
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