aTalk is an xmpp client designed for android and supports the following features:
* Instant messaging in plain text and End-to-End encryption with OMEMO or OTR
* Jabber VoIP-PBX gateway Telephony, allowing PBX phone call via service gateway
* SSL Certificate authentication, experimental DNSSEC and DANE Security Implementation for secure Connection Establishment
* Omemo encryption is available during multi-user-chat session, giving users' maximum privacy and security
* Supports both voice and video call with ZRTP, SDES and DTLS SRTP encryption modes
* Send and receive files for all document types and images. Support Image thumb nail preview for acceptance before the actual file is sent
* Unique GPS-Location implementation standalone tool, or sending locations to your chosen buddy for real-time tracking or playback animation.
* A 360 degree street view of your current location, may use for self-guided tour. The street view tracks and follows your direction of sight.
* Integrated photo editor with zooming and cropping, user can update his/her avatar with ease
* Multiple accounts support
* Multi-language UI support: Bahasa Indonesia, English, German, Russian and Spanish
* Free and Open Source