Messaging

571 open source Messaging apps

Sunmachine
APK
Sunmachine is an application to control smart lighting system. It features:Manual and auto operating modes.In auto mode, it uses motion and light sensors to turn the light on or off automatically.Supports WS2812, SK6812 or similar LED strips.Supports both RGB and WWA LEDs.Built-in scheduler that allows to change mode, brightness, hue, saturation or temperature at a specific time.
GitHubIzzyOnDroid
Sunup
APK
UnifiedPush distributor using Mozilla's push server This application is a service to provide push notifications to applications supporting UnifiedPush. More information about UnifiedPush at https://unifiedpush.org .
F-DroidIzzyOnDroid
SupIR
APK
SupIR is an open-source general-purpose IR blaster for Android using the irdb database. Inspired by the now-abandoned AndroidInfraRed, SupIR puts the power of a Universal Remote or a Flipper Zero in your pocket.SupIR requires an Android phone with an IR blaster. If your phone does not have an IR blaster, unfortunately, you are out of luck.
GitHubIzzyOnDroid
SyncOnWifi
APK
Ever had an account on your android device that you want to sync only when you're at home? Ever wished you could have your work email stop synchronising when you leave the office? SyncOnWifi handles this for you. It automatically switches synchronisation of your account on or off, depending on the WiFi network you are connected to. The following permission are required: * WiFi / network status to react to WiFi network connecting / disconnecting. * Contacts / Accounts access to read which accounts there are on your device. NO contact data is accessed. * Read / Write synchronisation settings to allow automatic synchronisation switching.
F-DroidGitHub
SyncPlayer
APK
SyncPlayer is an unofficial client that implements the syncplay protocol. It connects to Syncplay servers to sync video playback between two or more users. Use it to watch videos with your friends online. Just add a server, pick a video and make sure your friends join the same server and room. Please note: SyncPlayer does not stream or transmit the video data in any way whatsoever. It only synchronizes video playback between users. Syncplay clients are also available for Windows and Linux.
F-DroidGitHub
SyncTool
APK
Synctool can synchronize data between an Android smartphone and a server with FTP and ownCloud. Features Targets * Local Files * Owncloud * FTP Directions * From A to B * From B to A * Both Directories Strategies * Copy new files * Mirror * Copy new files in a folder with actual data * Copy all files in a folder with actual data * Move File * Move in a folder with actual data * One side wins * Date check Trigger * Trigger daily on selected time
F-DroidGitHub
S
Syncopoli
APK
An rsync client that allows you to backup files/directories on your phone to your remote server. Features: * Phone to remote server backup * Remote server to phone replication * Supports transport through both Rsync and SSH protocols * Supports authentication by password or public key
F-Droid
SysAdmin - Linux Server Management
APK
SysAdmin is an open-source mobile application that puts the power of Linux server administration in your pocket. Built with Flutter, it provides a sleek, intuitive GUI for managing your Linux servers on the go - no laptop required."Command your servers, not your schedule. Admin anywhere, anytime."Key Features:Dashboard - View server status, system metrics, and connection details at a glanceSSH Manager - Store and manage multiple server connections securelyUser Management - Create, Update, Deletes or see information about usersSystem Information - Detailed hardware information about your connected serverReal-time System Resource Monitoring - Track CPU, RAM, and swap usage with graphsSFTP File Explorer - Browse, upload, download, and manage files with easeSchedule Jobs - Create one-time and recurring tasksEnvironment Variables - Manage both local and global environment variablesTerminal - Full terminal access when you need the command lineComing Soon:Group ManagementService & Log ManagementPackage ManagementFirewall ConfigurationContainer Management (Docker/Podman)Disk & Network ManagementVNC SupportWhy SysAdmin?Traditional server management requires either physical access or an SSH session through a terminal, which can be inconvenient when you're on the move. SysAdmin solves this by providing:Mobile-First GUI for Linux server managementMulti-Server Support - manage all your servers from one appSecure Connections using SSH/SFTP with password or key-based authenticationNo Command Line Required (but available when you need it!)Security Features:Local Authentication - Biometric/pin protection using your device's screen lockEncrypted Communications - All server communications use SSH/SFTP encryptionSecure Credential Storage - Connection details are stored in your device's secure storageNo Server-side Components - Your credentials never leave your deviceThis app is completely free and open source software (FOSS) licensed under GPL-3.0."Because server management shouldn't require a desk."
GitHubIzzyOnDroid
TAC Database Client
APK
This project aims to provide a publicly, community-maintained, and well-organized database to collect Type Allocation Codes (TACs). While other databases exist, they either don't provide the full data set (e.g. by providing a query interface with rate limiting) or are not maintained in a way that we consider helps the community (submission process cumbersome, data not cleaned/sanitized,...). What is a TAC? A Type Allocation Code (TAC) is made up by the first 8 digits of the so-called International Mobile Station Equipment Identity (IMEI) associated with mobile devices. Earlier versions of the 3GPP TS 03.03 specification defined it as 6 bytes. The TAC is a unique identifier to determine the device manufacturer/model and its marketing name. These records are allocated by certain groups and a full list of all IMEIs is maintained by the GSMA.
F-Droid
TRIfA
APK
TRIfA - A New Kind of Instant Messaging Whether it's corporations or governments, digital surveillance today is widespread. Tox is easy-to-use software that connects you with friends and family without anyone else listening in. While other big-name services require you to pay for features, Tox is completely free and comes without advertising — forever. Encrypted: Everything you do with Tox is encrypted using open-source libraries. The only people who can see your conversations are the people you're talking with. Distributed: Tox has no central servers that can be raided, shut down, or forced to turn over data — the network is made up of its users. Say goodbye to server outages! Free: Tox is free software. That's free as in freedom, as well as in price. This means Tox is yours — to use, modify, and share — because Tox is developed by and for the users. More Information: * about Tox: https://tox.zoff.cc * Join the TRIfA Tox Groupchat: https://trifagrp.tox.zoff.cc/ * Join discussion on Matrix: https://matrix.to/#/#trifa:matrix.org Have a look at the desktop version: https://github.com/Zoxcore/trifa_material
F-DroidGitHub
TSVNC
APK
Fork of https://github.com/antlersoft/android-vnc-viewer enhanced for newer Android releases. Uses Material Design for the connection UI and Gradle to build. Converted from Eclipse to Android Studio project. Most of the features of the original are not there yet. It was tested on a Galaxy Tab S6 and a Pixel 4. This project was created with the goal of getting a workable VNC client on android to use my Galaxy Tab S6 with its Keyboard Book Cover as a linux machine. All other clients I've tested would not accept certain Hardware keys (like AltGr or combinations) and thus were not usable for serious Work. Currently the client fits the framebuffer to the display size (thus no zooming and panning at the moment).
F-DroidGitHub
TSViewer
APK
This is a simple TeamSpeak client which connects every x minutes to get the connected clients and displays them in a notification and/or quick settings tile. This works by using a Teamspeak Query account to login. That means it is required to enter the ip and login credentials into the app. As this is sensitive, the ip and credentials are saved only locally and encrypted to make sure that other apps cannot scrape the data. The app uses the new Material You adaptive colors, but is also backwards compatible to devices below Android 12. Automated checks running in the background (customizable time between 15 and 120 minutes) Amount of clients and their nicknames will be written into a notification Amount of clients will be written in the label of a qs tile (Android 10+) Amount of clients and time will be added to a database to be later viewed in a graph view Material You adaptive color theming support WearOS support (Core flavor only) Locally stored and encryped IP and login credentials No trackers like Firebase and Crashlytics
F-DroidGitHub
Tailscale
APK
Tailscale is a mesh VPN alternative that makes it easy to connect your devices, wherever they are. No more fighting configuration or firewall ports. Built on WireGuard®, Tailscale enables an incremental shift to zero-trust networking by implementing “always-on” remote access. This guarantees a consistent, portable, and secure experience independent of physical location. WireGuard is a registered trademark of Jason A. Donenfeld.
F-DroidGitHub
TapUnlock
APK
NFC-enabled lockscreen with a focus on speed, simplicity and security.
F-DroidGitHub
TaskerHA
APK
TaskerHA is a Tasker plugin that connects Tasker to Home Assistant. Features: • Respond to entity state changes • Call any Home Assistant service • Retrieve an entity's state • Full integration with Tasker variables Requires: • Tasker • Home Assistant instance with a long-lived access token
F-DroidGitHub
Telegram
APK
Telegram is a cloud-based mobile and desktop messaging app with a focus on security and speed.
Direct
Telewatch
APK
Functions:FCM message notification, quick viewing, marking as read and replyingMulti-account supportInterface customizationAll message grouping supportUnread/read indicatorConnection status indicatorViewing or downloading text, images, and videosPlay Voice MessageSaving images or videosReply and forward messagesSaving images or videosText messagingMessage deletionSupport for rotating the digital crown
GitHubIzzyOnDroid
Tether companion
APK
Run a web server with information about battery level and network mode, which are useful for tethering. AntiFeatures: connects to Google ( clients3.google.com ) to check for network availability
F-DroidGitHub
Text Torch
APK
Text Torch analyzes your SMS and MMS messages and tells you how you compare to each person you message in several ways: • what percent of the time each of you starts conversations with the other • what percent of the texts each of you has sent • how the average length of your texts compares to theirs Sentry is used (opt-in) for analytics and crash reporting. Permissions: • READ_SMS to get SMS and MMS message data • READ_CONTACTS to display contacts' names • INTERNET and ACCESS_NETWORK_STATE for Sentry
F-DroidGitHub
Thor
APK
F-Droid
T
ThreatScoopOnionChat
APK
# ThreadScoopOnionChat This version is a fork from " https://github.com/session-foundation/session-android ", enfocado en la privacidad. ## How Did ThreadScoopOnionChat Come About? I have always been a fan of privacy and security in communications, and I am constantly researching potential security breaches in messaging applications. ThreadScoopOnionChat emerged after the analysis of this blog "https://soatok.blog/2025/01/14/dont-use-session-signal-fork/", in which several aspects are described as to why using Session is not recommended, and I wondered how it is possible that a foundation focused on privacy—with the grants and support it receives—has not been able to improve this protocol. I still do not understand the answer, since my resources are much smaller than those of a foundation compared to that of a person who is simply a fan of privacy and security. In this blog, certain problems were described: 1> "https://soatok.blog/2025/01/14/dont-use-session-signal-fork/#insufficient-entropy-ed25519" 2> "https://soatok.blog/2025/01/14/dont-use-session-signal-fork/#in-band-negotiation" 3> "https://soatok.blog/2025/01/14/dont-use-session-signal-fork/#public-keys-aes-gcm" This is a forked version privacy focussed from Session. Go Github to check all features implemented.
F-DroidGitHub
Threema Libre
APK
NOTE: A Threema Shop license is required, please visit: https://shop.threema.ch to get one. Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind. Whether chats, calls, or files, everything is end-to-end encrypted, and no data trail is left behind. Instead of a phone number or email address, a randomly generated Threema ID serves as a unique identifier – anonymous and secure. Threema protects what really matters: your privacy. In contrast to the version distributed via Google Play, Threema Libre contains no proprietary libraries / components (like Google Play Services). Advantages of Threema: • Text and voice messages, including emoji reactions • End-to-end encrypted voice, video, and group calls • Location sharing • Sending files in all formats (PDF, GIF, MP3, ZIP, and more) • Ability to edit sent messages and delete them for chat partners • Desktop app and web client for convenient chatting on your PC • Group creation and polls • Light or dark mode • No ads, no trackers, no data collection • Identity verification of contacts by scanning their QR code Reliable security: • Open source and regular audits • Servers in Switzerland • Anonymous use possible: no phone number or email address required • Messages are deleted from the server immediately after delivery Do you have any questions or problems? Our FAQ can help: https://threema.com/support Enjoy using Threema!
F-DroidGitHub
Thunderbird Beta for Testers
APK
Help make the next Thunderbird release as awesome as possible by downloading Thunderbird Beta and getting early access to the latest features and bug fixes before they're officially released. Your testing and feedback are important, so please report bugs, rough edges, and share your thoughts with us! Find our bug tracker, source code, and wiki at https://github.com/thunderbird/thunderbird-android. We’re always happy to welcome new developers, designers, documenters, translators, bug triagers and friends. Visit us at https://thunderbird.net/participate to get started. Thunderbird is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity. Built on open-source technology and supported by a dedicated team of developers alongside a global community of volunteers, Thunderbird never treats your private data as a product. Supported solely by financial contributions from our users, so you never have to see ads mixed in with your emails again. What you can do Ditch multiple apps and webmail. Use one app, with an optional Unified Inbox, to power through your day. Enjoy a privacy-friendly email client that never collects or sells your personal data. We directly connect you to your email provider. That’s it! Take your privacy to the next level by using OpenPGP email encryption (PGP/MIME) with the “OpenKeychain” app, to encrypt and decrypt your messages. Choose to sync your email instantly, at set intervals, or on-demand. However you want to check your email, it’s up to you! Find your important messages using both local and server-side search. Compatibility Thunderbird works with IMAP and POP3 protocols, supporting a wide range of email providers, including Gmail, Outlook, Yahoo Mail, iCloud, and more. Why use Thunderbird The trusted name in email for over 20 years - now on Android. Thunderbird is fully funded by voluntary contributions from our users. We don’t mine your personal data. You are never the product. Made by a team that is as efficiency-minded as you are. We want you to spend minimal time using the app while getting maximum in return. With contributors from all over the world, Thunderbird for Android has been translated into more than 20 languages. Supported by MZLA Technologies Corporation, a wholly owned subsidiary of the Mozilla Foundation. Open Source and Community Thunderbird is free and open source, which means its code is available to see, modify, use and share freely. Its license also ensures that it will be free forever. You can think of Thunderbird as a gift from thousands of contributors to you. We develop in the open with regular, transparent updates on our blog and mailing lists. Our user support is powered by our global community. Find the answers you need, or step into the role of a contributor - whether it’s answering questions, translating the app, or telling your friends and family about Thunderbird.
F-DroidGitHub
Thunderbird: Free Your Inbox
APK
Thunderbird is a powerful, privacy-focused email app. Effortlessly manage multiple email accounts from one app, with a Unified Inbox option for maximum productivity. Built on open-source technology and supported by a dedicated team of developers alongside a global community of volunteers, Thunderbird never treats your private data as a product. Supported solely by financial contributions from our users, so you never have to see ads mixed in with your emails again. What you can do Ditch multiple apps and webmail. Use one app, with an optional Unified Inbox, to power through your day. Enjoy a privacy-friendly email client that never collects or sells your personal data. We directly connect you to your email provider. That’s it! Take your privacy to the next level by using OpenPGP email encryption (PGP/MIME) with the “OpenKeychain” app, to encrypt and decrypt your messages. Choose to sync your email instantly, at set intervals, or on-demand. However you want to check your email, it’s up to you! Find your important messages using both local and server-side search. Compatibility Thunderbird works with IMAP and POP3 protocols, supporting a wide range of email providers, including Gmail, Outlook, Yahoo Mail, iCloud, and more. Why use Thunderbird The trusted name in email for over 20 years - now on Android. Thunderbird is fully funded by voluntary contributions from our users. We don’t mine your personal data. You are never the product. Made by a team that is as efficiency-minded as you are. We want you to spend minimal time using the app while getting maximum in return. With contributors from all over the world, Thunderbird for Android has been translated into more than 20 languages. Supported by MZLA Technologies Corporation, a wholly owned subsidiary of the Mozilla Foundation. Open Source and Community Thunderbird is free and open source, which means its code is available to see, modify, use and share freely. Its license also ensures that it will be free forever. You can think of Thunderbird as a gift from thousands of contributors to you. We develop in the open with regular, transparent updates on our blog and mailing lists. Our user support is powered by our global community. Find the answers you need, or step into the role of a contributor - whether it’s answering questions, translating the app, or telling your friends and family about Thunderbird.
F-DroidGitHub