- YouMailYouMail replaces your voicemail with an automated secretary for your iPhone or Android.
- SkypeSkype makes it easy to stay connected with friends, family, or colleagues from around the globe.
- SlackSlack is a team communication and collaboration platform that brings all your communication together in one place.
- ViberViber lets you call, text, and send photos for free to other Viber users from any country.
- Google HangoutsHangouts bring conversations to life with photos, emoji, and even group video calls for free.
- HipchatA private group and video chat software with real-time collaboration, built for teams.
- VoxerVoxer is a messaging app for smartphones with live voice, text, photo, and location sharing.