<i>aTalk</i> is an XMPP client that supports the following features: * Instant messaging in plain text and End-to-End encryption with OMEMO * 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: Me