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aTalk

XMPP/Jabber client with encrypted instant messaging and video calls
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)
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.1.1 (401010) suggested Added on Jun 15, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • read locations from your media collection
      Allows the app to read locations from your media collection.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
      (5.1)
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • read video files from shared storage
      Allows the app to read video files from your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked device
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • org.atalk.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 64 MiB PGP Signature | Build Log

  • Version 4.1.0 (401000) - Added on May 17, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • read locations from your media collection
      Allows the app to read locations from your media collection.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
      (5.1)
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • read video files from shared storage
      Allows the app to read video files from your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked device
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • org.atalk.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 64 MiB PGP Signature | Build Log

  • Version 4.0.2 (400020) - Added on May 09, 2024

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • access approximate location only in the foreground
      This app can get your approximate location from location services while the app is in use. Location services for your device must be turned on for the app to get location.
    • access precise location only in the foreground
      This app can get your precise location from location services while the app is in use. Location services for your device must be turned on for the app to get location. This may increase battery usage.
    • read locations from your media collection
      Allows the app to read locations from your media collection.
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • view Wi-Fi connections
      Allows the app to view information about Wi-Fi networking, such as whether Wi-Fi is enabled and name of connected Wi-Fi devices.
    • android.permission.AUTHENTICATE_ACCOUNTS
    • pair with Bluetooth devices
      Allows the app to view the configuration of the Bluetooth on the phone, and to make and accept connections with paired devices.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • allow Wi-Fi Multicast reception
      Allows the app to receive packets sent to all devices on a Wi-Fi network using multicast addresses, not just your phone. It uses more power than the non-multicast mode.
    • run foreground service
      Allows the app to make use of foreground services.
    • find accounts on the device
      Allows the app to get the list of accounts known by the phone. This may include any accounts created by applications you have installed.
      (5.1)
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • change your audio settings
      Allows the app to modify global audio settings such as volume and which speaker is used for output.
    • show notifications
      Allows the app to show notifications
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • read audio files from shared storage
      Allows the app to read audio files from your shared storage.
    • read image files from shared storage
      Allows the app to read image files from your shared storage.
    • read video files from shared storage
      Allows the app to read video files from your shared storage.
    • read phone status and identity
      Allows the app to access the phone features of the device. This permission allows the app to determine the phone number and device IDs, whether a call is active, and the remote number connected by a call.
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • ask to ignore battery optimizations
      Allows an app to ask for permission to ignore battery optimizations for that app.
    • display notifications as full screen activities on a locked device
      Allows the app to display notifications as full screen activities on a locked device
    • control vibration
      Allows the app to control the vibrator.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
      (10)
    • org.atalk.android.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 64 MiB PGP Signature | Build Log