Xabber

Xabber is a free, open-source XMPP chat app for Android. It supports multiple accounts, has a clean interface, and strong security with encryption. It's fast, ad-free, and works with all standard XMPP servers. You can share files, customize notifications, and even use it on browsers. iOS version coming soon! Learn more at xabber.com or follow @xabber_xmpp on Twitter.