telnet-honeypot
Cowrie SSH/Telnet Honeypot https://docs.cowrie.org/
This is an easy to use telnet client module to interact with a remote system smoothly over this protocol! It is a very minimalistic alterative to "telnetlib".
Cyanide is an advanced open-source honeypot framework for cybersecurity. It emulates SSH/Telnet to lure attackers and analyze their tactics.