Openssl

Make a certificate

# create a self-signed (insecure,unencrypted) certificate
openssl req -x509 -nodes -days 365 \
  -newkey rsa:1024 -keyout mycert.pem -out mycert.pem

Command line server

openssl s_server -cert mycert.pem

Command line client

openssl s_client -connect localhost:4433