aTalk

aTalk is an XMPP client that supports the following features:

* Instant messaging in plain text and End-to-End encryption with OMEMO or OTR * SSL Certificate authentication, DNSSEC and DANE Security implementation for enhanced secure connection establishment * OMEMO encryption in group chat session enhancing privacy and security * OMEMO Media File Sharing for all files including Stickers, Bitmoji and Emoji rich contents * Support http file upload for file sharing with offline contact and in group chat * Support Stickers, Bitmoji and Emoji rich content sharing via Google Gboard * Send and receive files for all document types and images with thumbnail preview and gif animation * Auto accept file transfer with max file size option * Implement fault-tolerance file transfer algorithm, via Jingle File Transfer, Legacy In-Band/SOCK5 Bytestreams and HttpFileUpload protocols to ease and enhance file sharing reliability * Enhance and harmonize UI for file sharing in chat and chatRoom * Support share, quote and forward of messages and media with previews prior to sending * Support multi-instances of audio media player with functions: Play, Pause, Resume, Stop and Seek * Support unread message badges in contact and chatRoom list views * User selectable option for heads-up notification and quite hours * Share of social media links are tagged with thumbnail and title * Support Text to Speech and speech recognition UI with enable option per chat session (contact and group chat) * XEP-0012: Last Activity time associated with contacts * XEP-0048: Bookmarks for conference room and autoJoin on login * XEP-0070: Verifying HTTP Requests via XMPP entity for user authentication without password entry * XEP-0071: XHTML-IM Support chat messages containing lightweight text markup * XEP-0085: Chat State Notifications * XEP-0124: Bidirectional-streams Over Synchronous HTTP (BOSH) with Proxy support * XEP-0178: Use of SASL EXTERNAL with TLS Certificates for client authentication * XEP-0184: Message Delivery Receipts with user enable/disable option * XEP-0215: External Service Discovery * XEP-0251: Jingle Session Transfer: Support both Unattended and Attended call transfer * XEP-0391: Jingle Encrypted Transports for OMEMO encrypted media file sharing * Implement call waiting to accept a second incoming call by placing the in-progress call on hold; and allow switching between calls * Implement Jabber VoIP-PBX gateway Telephony, allowing PBX phone call via service gateway * Join or create room with full room configuration support for owner * Integrated captcha protected room user interface with retry on failure * Support both voice and video call with ZRTP, SDES and DTLS SRTP encryption modes * ZRTP crypto algorithms uses SHA-2 384, 256bit ciphers AES256 & TWOFISH-256, enabling elliptic with Curve 25519 * SDES encryption with AES256 and AES192, acceleration using OpenSSL * Support simultaneous media call and message chat sessions * Unique GPS-Location implementation as standalone tool, send locations to your desired buddy for real-time tracking or playback animation * A 360° street view of your current location use for self-guided tour. The street view tracks and follows your direction of sight * Built-in demo for GPS-Location features * Integrated photo editor with zooming and cropping, user can update the avatar with ease * Last message correction, message carbons and offline messages (OMEMO) * Stream Management and mobile network ping interval self-tune optimization support * In-Band Registration with captcha option support * Multiple accounts creation * User selectable Themes support * Multi-language UI support (Bahasa Indonesia, English, German, Portuguese, Russian, Slovak and Spanish)