Bit Chat is a secure, peer-to-peer, open source instant messenger with end-to-end encryption.

ChatSecure is a messaging application for iOS which allows OTR and OMEMO encryption for the XMPP protocol.

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

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

Hangouts is an instant messaging software developed by Google.

Handcent Next SMS a customizable and powerful SMS messenger app.

BlackBerry Messenger, also known as BBM is an instant messenger and videotelephony application included on BlackBerry devices that allows messaging and voice …

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

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

GO SMS Pro is a free app that replaces the stock SMS messaging interface for your Android device.

GroupMe is a mobile group messaging app.

ICQ is an open source instant messaging software.