FBMessenger is described as 'stand-alone Facebook Messenger app for Linux, very similar to the official Messenger for Windows' and is an app in the Social & Communications category. There are nine alternatives to FBMessenger for a variety of platforms, including Android, Mac, Android Tablet, Linux and iPhone. The best alternative is Pidgin, which is both free and Open Source. Other great apps like FBMessenger are Facebook Messenger (Free), Adium (Free, Open Source), Messenger Lite (Free) and Kopete (Free, Open Source).
Pidgin is an easy to use, multi-protocol chat client client used by millions. Connect to AIM, MSN, Yahoo, XMPP, and more chat networks all at once. It has built-in support for NSS, offering client-to-server message encryption for protocols that support it.
Messenger Lite is a fast and data-efficient messaging app to reach the people in your life. Installs quickly. It's less than 10MB to install, saving storage space on your phone. Saves data. It loads fast, runs efficiently and uses less mobile data.
Kopete is an instant messenger supporting AIM, ICQ, Jabber, Gadu-Gadu, Novell GroupWise Messenger, and more. It is designed to be a flexible and extensible multi-protocol system suitable for personal and enterprise use.
Messenger Kids is a free video calling and messaging app designed for kids to connect with close friends and family from their tablet or smartphone. Kids can only connect with parent-approved contacts, which creates a more controlled environment.
Kaidan is a simple, user-friendly Jabber/XMPP client providing a modern user interface using Kirigami and QtQuick. The back-end of Kaidan is written in C++ using the QXmpp XMPP client library and Qt 5.
OctroTalk is an Jabber/Gtalk client with support for GTalk (GMail) audio and Video calls. OctroTalk also supports SIP calling (through a provider of your choice). Features: 1 ) Connect securely to GTalk/Jabber 2) P2P Audio/Video Calling