Google Voice - Google Voice gives you one number for all your phones, voicemail organized in an email format, free...
Rock RMS - Rock RMS is a community supported open-source Church Management System that provides innovative features to churches of all sizes.
TextMe - TextMe is a free calls and messaging application at both local and international levels.
eCatholic - eCatholic provides a total content management system that helps Catholic parishes, ministries, & dioceses create websites & website design.
Talkatone - Android App on. Google Play. Stop paying for cell minutes, texts & landlines; Turn your iPad or iPod touch into a phone; Call/Text even in areas with bad cell coverage; Call/Text when travelling without paying for expensive international minutes.
ChurchInsight - ChurchInsight is a church website content management system (cms). It allows churches to have great church websites and the best church website designs.