chompSMS!

WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.

Zulip is a group chat app.

Remember when text messaging was like magic?

Dasher lets you do more than just text message. It's messaging with benefits:

Say Hi allows you to send what you type while you're typing!

Sesame is a messaging app that gives you a self-aware digital assistant to protect messages on your behalf: your own Personal Cognitive Messenger™.

Handcent SMS is a free enhanced SMS and MMS application for Android.

You love your iPhone as much as we do? You text all the time? Want more features? Then biteSMS is for you: with lots of extra features like smileys, Quick Reply, Quick Compose/Quick Call, Privacy, a character/SMS counter and much more!

WowApp helps you do good through the Power of Sharing. We share all revenues with you. WowApp Messenger is free and you can receive earnings without ever spending money.

GO SMS PRO brings you cool UI, fast and convenient SMS/MMS experience. GO SMS Pro (yet FREE) is a huge enhancement for stock messaging app, much faster and more functions.

MANY GOOD REASONS TO INSTALL JONGLA:

YAATA is influenced by the true spirit of Android. It is a SMS/MMS app that has so much to offer. You can personalize and configure this app to your definition of the perfect app. YAATA SMS is very powerful, reliable and the speed of the app is on another level. Even with all the exciting features this app has to offer the app size is under 3.9MB. This SMS app is highly user friendly and fulfils the wants and needs of the ultimate geek to a basic beginner user.

Open source instant messaging server and clients. Backend in pure Go (license GPL 3.0), client-side binding in Java for Android and Javascript (license Apache 2.0), persistent storage RethinkDB. JSON over websocket (long polling is also available). Tinode is meant as a replacement for XMPP. Overall it's a lot like open source WhatsApp or Telegram.

Ever received an SMS from a stranger? Hate receiving spam SMS?Truemessenger by Truecaller tells you who sent you that SMS (even if they are not in your contacts) and automatically blocks spam, keeping your Inbox safe and clean.