Top Alternatives to Viber

Skype is an instant messaging and VOIP (Voice Over Internet Protocol) client to communicate with people in a distant place.

Hangouts is an instant messaging software developed by Google.

Telegram is a free cloud-based instant messaging platform.

WhatsApp Messenger is an instant messaging platform owned by Facebook.

Tox is a peer-to-peer instant-messaging and video-calling protocol that offers end-to-end encryption.

Signal is the most scalable encryption tool.

Imo free video calls and chat is a kind of Communication apps for Android.

Facebook Messenger is the official Facebook app that lets you have text conversations with all of your friends on the popular social network.

TeamSpeak is software for quality voice communication via the Internet.

LINE is a new communication app which allows you to make free voice calls and send free messages whenever and wherever you are.

Mattermost is an open source, private cloud Slack-alternative, Workplace messaging for web, PCs and phones. MIT-licensed.

ICQ is an open source instant messaging software.

Fring connects with Skype, MSN Messenger, ICQ and Google Talk from your iPhone.

WeChat is a social media with instant messaging, commerce and payment services application.

Kik Messenger is an instant messenger software.

Xabber (XMPP and Jabber) is a XMPP client for the Android Operating System.

Voxeet is VoIP web conferencing software that uses 3D high definition voice technology to produce immersive sound.

Tango is the messaging app with the best video calling. All messages and calls are free.

KakaoTalk (Korean: 카카오톡), or sometimes KaTalk, is a free mobile instant messaging application for smartphones with free text and free call features.

BlackBerry Messenger, also known as BBM is an instant messenger and videotelephony application included on BlackBerry devices that allows messaging and voice calls between BlackBerry, iOS, Android, and Windows Mobile users.

Conversations is an open source XMPP/Jabber client for the Android platform.

Talkatone is a free calling app.

Zulip is a chat and collaborative software.

Disa is your new messaging hub. Conversations from different services can seamlessly be joined together, or disbanded within seconds.

Dialog Messenger is a handy and feature-rich enterprise multi-device messenger available for server or cloud.

Dasher Messenger provids a way to message friends.

Toky is an automation platform.