1. Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.

  2. Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.

  3. Hangouts bring conversations to life with photos, emoji, and even group video calls for free. Connect with friends across computers, Android, and Apple devices.

  4. Jive's Hosted VoIP UC platform is an enterprise-grade business phone system that works for any organization. Welcome to Unified Communications in the cloud.

  5. Switch is a cloud-based phone system built for Google Apps users.

  6. Private & Secure Messenger

  7. Use your iPhone, iPad or iPod touch to make and receive calls using your 8x8 Virtual Office phone...

  8. Grasshopper enables entrepreneurs to build a virtual office that connects callers to employees, wherever they are.

  9. Fast, simple & secure messaging. Privacy that fits in your pocket.

  10. Real-time picture chatting

  11. Wickr is a free end-to-end encrypted text, video, picture and voice messenger with full sender...

  12. A secure, end-to-end encrypted Swiss instant messenger with a focus on privacy.