Certain port numbers are registered to a service name. e.g. 80 to http and 443 to https. For language tool this could also be done via the following application form: http://www.iana.org/cgi-bin/usr-port-number.pl Currently, most language tools services are running on 8081.
The service name is usually no longer then 12 characters so I would propose:
- langtool # Language Tool
- langtools # Language Tool (secure version)
Note that if language tool might ever get a secure implementation (SSL, TLS or something else), this /could/ be done over the same port or the initial request should mention a portnumber +1 for a secure version or of course a completely different numbers as one cannot be very picky with these requests.