// iopsys software solutions AB : https://iopsys.eu/
// Submitted by Roman Azarenko <******@****.***>
iopsys.se

// IPiFony Systems, Inc. : https://www.ipifony.com/
// Submitted by Matthew Hardeman <mhardeman@ipifony.com>
ipifony.net

// IServ GmbH : https://iserv.de
// Submitted by Mario Hoberg <******@****.***>
iservschule.de
mein-iserv.de
schulplattform.de
schulserver.de