Coded in QB64 "BASIC" Its a light weight Webserver to experiment with.
To add or remove HTML code go to line 253 and has to be in the format html$ = html$ +"
Your Message here
"
Tested in Windows ok Linux Ubuntu 14.04.x ok with QB64 qb64_2017-04-30-12-21-42_406794d_lnx.tar.gz
Mac osx Unknown Android Help needed
Editor/compiler Win Linux Mac. QB64 from http://qb64.org/