Telnet server
I ported a simple telnet server from https://github.com/styczynski/telnetish.cpp.
It runs on redox. I wasn't able to test on-hardware, though. The network stack seems borked on my Intel devices. If you have hardware where the network stack works, I would appreciate testing it.
I would have ported a dropbear, but that currently depends upon the POSIX syslog headers and I decided to hold off until redox's syslog implementation is done.