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

  2. Screenleap is a web app that lets users share their device's screen over the Internet. These screens can be a desktop computer monitor or a smartphone screen or anything else that can load a web browser. Read more about Screenleap.

  3. A messaging app for teams who see through the Earth!

  4. Quickly capture what's on your mind and get a reminder later at the right place or time.

  5. Google Voice gives you one number for all your phones, voicemail organized in an email format, free...

  6. UberConference provides a rich visual interface for conference calls. Simple, visual, and free to use, it's audio conferencing done right.

  7. Skype for Business, formerly Lync, is unified communications platform that enables instant messaging, conferencing and online meetings

  8. RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies

    freemium $19.99 / Monthly (All-in-One Phone, Team Messaging, and Video Conferencing.)

  9. Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.

  10. Facebook Messenger is a faster way to message.

  11. Jabber.org is an IM service based on XMPP and one of the key nodes on the XMPP network.

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