Zoiper - Cross-platform VoIP softphone dialer for SIP and IAX systems
Officevibe - Officevibe is an employee survey platform with the mission of improving company culture. Measure and improve your culture in less than 5 minutes per month, with our simple surveys.
Sipdroid - Free and open-source SIP/VoIP Client
Kudos - Kudos is the simple and easy to use employee recognition software that enhances employee engagement and team communication.
Linphone - Linphone is an internet phone or Voice Over IP phone (VoIP).
Fond - Fond employee engagement platform helps companies increase employee happiness with recognition, rewards, perks and survey programs to maximize impact..