Top Alternatives to Nimbuzz

Telegram is a free cloud-based instant messaging platform.

WhatsApp Messenger is an instant messaging platform owned by Facebook.

Trillian is a proprietary multiprotocol instant messaging application.

Viber Free Messenger and Phone Calls.

Signal is the most scalable encryption tool.

Jitsi (formerly SIP Communicator) is a free and open source multiplatform voice (VoIP), videoconferencing and instant messaging application.

Digsby provides you with IM, email and Social networks in one easy to use application.

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.

Empathy is an instant messaging (IM) and voice over IP (VoIP) client which supports text, voice, video, file transfers, and inter-application communication over various IM protocols.

IM+ supports simultaneously major IM services, including Google Talk, Twitter DMs, Yahoo!, AIM/iChat, ICQ, Jabber (and Slack through Jabber), etc.

Linphone is a free voice over IP (VoIP) service and SIP client.

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

Psi is a free instant messaging application designed for the XMPP network (including Google Talk). Fast and lightweight, Psi is fully open-source and compatible with Windows, Linux, and Mac OS X.

Wire is a cross-platform, encrypted instant messaging client created by Wire Swiss. It is available for iOS, Android, Linux, Windows, macOS and Web browser clients.

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.

Gajim is an instant messaging client for the XMPP protocol which uses the GTK+ toolkit.

iMessage is an instant messaging service.

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

CSipSimple is a Voice over Internet Protocol (VoIP) application for Google Android operating system using the Session Initiation Protocol (SIP).

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.

Zoiper is an easy to use sip video softphone, with excellent voice quality and easy to setup.

Talkatone is a free calling app.

Telephone allows you to make phone calls over the Internet or your company’s network.

Zulip is a chat and collaborative software.

QuteCom (WengoPhone) is a free-software SIP-compliant VoIP client.

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

Tkabber is a GPL instant messaging client for the XMPP protocol which uses the Tk toolkit for the GUI.

Dasher Messenger provids a way to message friends.

YakYak is a desktop chat client for Google Hangouts.

Toky is an automation platform.