Linphone - Linphone is an internet phone or Voice Over IP phone (VoIP).
Nixle - Nixle provides communities throughout the country with news and information that is both proximate...
Zoiper - Cross-platform VoIP softphone dialer for SIP and IAX systems
Photo Evidence Pro - Other Public Safety
Sipdroid - Free and open-source SIP/VoIP Client
EZRentOut - EZRentOut is a cloud based equipment rental software for rental businesses.