Open Source Android Communications Apps
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Communications Apps for Android
View 1557 business solutionsBrowse free open source Communications apps and projects for Android below. Use the toggles on the left to filter open source Communications apps by OS, license, language, programming language, and project status.
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MongoDB Atlas runs apps anywhereMongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
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Yeastar: Business Phone System and Unified CommunicationsUser-friendly, optimized, and scalable, the Yeastar P-Series Phone System redefines business connectivity by bringing together calling, meetings, omnichannel messaging, and integrations in one simple platform—removing the limitations of distance, platforms, and systems.
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QPrompt
Personal teleprompter software for all video makers.
Free teleprompter software for all video creators. Built with ease of use, fast performance, control accuracy, and cross-platform support in mind. QPrompt works with studio teleprompters and tablet teleprompters, cellphones, and webcams. It was also designed for use in video conferences.">
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PairDrop
PairDrop, Transfer Files Cross-Platform
PairDrop is a self-hosted, open-source alternative to Apple's AirDrop, allowing users to share files between devices over the same local network without the need for an internet connection. -
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WhatsApp clone app
WhatsApp clone project demonstrates modern Android development
This is a WhatsApp clone app built with Stream Chat SDK for Compose to implement messaging systems and Stream Video SDK for Compose using Jetpack Compose. -
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libimobiledevice
A cross-platform protocol library to communicate with iOS devices
libimobiledevice is a cross-platform software library that talks the protocols to interact with iOS devices. Unlike other projects, it does not depend on using any existing proprietary libraries and does not require jailbreaking. Access filesystem of a device, access documents of file sharing apps, retrieve information about a device and modify various settings, backup and restore the device in a native way compatible with iTunes. Manage app icons arrangement on the device, install, remove, list and basically manage apps. Activate a device using official servers, manage contacts, calendars, notes and bookmarks, retrieve and remove crashreports. Retrieve various diagnostics information, establish a debug connection for app debugging, mount filesystem images, forward device notifications, manage device provisioning. Take screenshots from the device screen (requires mounted developer image). Simulate changed geolocation of the device (requires mounted developer image). -
Create a personalized AI chatbot for each team in minutesQueryPal is the lifeline your team needs. Our AI chatbot integrates seamlessly with your communication channels, using advanced language understanding to identify and auto-answer repetitive questions — in seconds.
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Send files to TV
Easily transfer files to your Smart TV from Android or Windows
SFTTV is a simple application to connect your Smart Tv android, your android mobile device and your personal computer. It allows you to quickly and easily share movies, tv show or ANY files between these devices through your local network. No Internet required. SFTTV is designed to be simple. The application discover automagically other devices on the local network with SFTTV installed. Transfer large files in record time SFTTV is faster than Bluetooth. SFTTV is the fastest and most private way to send files to your TV Cross platform SFTTV runs also on Windows, macOS, and Linux. Files can easily be transferred between machines running different operating systems. In order to use SFTTV on your local network, you will need to install the android application on your TV and on each device that you wish to use for transferring files. SFTTV has a really easy to use user interface!">
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FrostWire
Search, Download, Play, Share on Bittorrent and the cloud
FrostWire https://www.frostwire.com/ is a media player, Video Downloader and Peer to Peer (P2P) information sharing client for the BitTorrent network. This project is not affiliated with LimeWire LLC. FrostWires' source code is Licensed under the GNU GPL and Apache Open Source licenses. System Requirements Any of the following operating systems: ● Windows 10, 8, 7, Vista for Intel processors (64-bit only) ● Mac OS X 10.11 (El Capitan) or later (64-bit) ● Linux, Unix such as Solaris (64-bit) ● Android 7.0 or later 256 MB of RAM (512 MB Recommended) An active internet connection -
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SymmetricDS
Database Replication, Filtered Synchronization, and Transformation
SymmetricDS is database replication and file synchronization software. It is a platform-independent, web-enabled, and database-agnostic synchronization tool. With initial data load, bidirectional change data capture, conflict resolution, and data transformation, it is a comprehensive data replication solution. -
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Session for Android
A Decentralized, Onion Routed, Private Messenger
Session Android is the official mobile client for Session, a privacy-first messaging protocol that enables secure, anonymous messaging without requiring phone numbers, email addresses, or centralized user accounts. Built natively for Android, the app lets users send and receive end-to-end encrypted text messages, voice notes, images, and attachments in both one-on-one and group chats, all while routing data through a decentralized onion-routing network designed to protect not just message content but also metadata like sender ID, timing, and network location. The Android client integrates seamlessly with Android’s notification system and background services so that you can stay connected without exposing your identity or compromising privacy, and it supports features such as message reactions, search within chats, profile and contact management, and local message storage encrypted at rest. -
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FetLife for Android
The FetLife App on Android
This is the FetLife open source application made for Android. FetLife is the app for Kinksters who want to chat with fellow Kinksters, find out where the nearest FetLife events are happening, view other members’ profiles, and many other kinky things. With FetLife on Android, it’s easier than ever to access all the things you love about FetLife. Get notified on your Android phone so you stay on top of conversations and discussions, and discover the latest events on the app’s map. Want to be discreet? No problem, as the FetLife app comes with discreet mode so you can use the app freely without worries. -
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Tutanota
Open source email service with a strong focus on security and privacy
Tutanota is an open source email client focused on security and privacy. It is built with end-to-end encryption and 2FA, so you can be assured of utmost email security. Tutanota is always encrypted, so whether you’re using their secure webmail client, mobile apps or desktop clients, you can be sure to communicate securely. -
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Flying Carpet
File transfer between Android, iOS, Linux, macOS, and Windows
Send and receive files between Android, iOS, Linux, macOS, and Windows over ad hoc WiFi. No shared network or cell connection required, just two devices with WiFi chips in close range. Don't have a flash drive? Don't have access to a wireless network? Need to move a file larger than 2GB between different filesystems but don't want to set up a network share? Try it out! -
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Tox
A New Kind of Instant Messaging
Tox is a peer to peer (serverless) instant messenger that focuses on security and privacy. In today's world where digital surveillance is rampant, Tox offers users a communication software alternative that's free from prying eyes and ears, and is, quite literally free and without advertising. Tox comes with all the great features you'd expect from an instant messenger application, including voice calls, video calls, file sharing and screen sharing. Everything done on Tox is encrypted using open-source libraries so you can be assured of completely private conversations. It also has no central servers that can be raided, shut down, or forced to turn over data. There are no corporate interests, no hidden agendas-- just simple, secure and easy to use messaging. -
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HP Socket
High Performance TCP/UDP/HTTP communication component
Server Based on IOCP/EPOLL communication model, combined with technology of memory pool, private heap etc., efficient memory management is implemented to support large scale and high concurrent communication scenarios. Agent The Agent component is essentially a Multi-Client component that uses the same technical architecture as the Server component. An Agent component object can create and efficiently handle large-scale Socket connections at the same time. Client Based on Event-Select/POLL communication model, each component object creates a communication thread and manages a Socket connection. Client components are suitable for small-scale client scenarios. -
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Telegram for Android
Telegram messenger for Android
Telegram is a wonderful and private messaging app that offers simple, fast, secure and synced messaging for all your devices. It delivers messages faster than any other application; cloud-based so you can access your messages from any device; and very secure, with messages heavily encrypted and could even self-destruct. Telegram is simple and fun to use, with powerful photo and video editing tools as well as an open sticker/GIF platform to let you express yourself fully. It’s also incredibly powerful. Whether you’re setting up a group chat for up to 200,000 members or sharing large videos or documents, Telegram is up to the task. Best of all it’s completely free and open source, with no ads or subscription fees. -
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PikaTorrent
Just pick a Torrent, stream and download on all your devices
PikaTorrent is a modern, cross-platform BitTorrent client designed for ease of use across desktop and mobile devices. Developed using Flutter, it offers a unified experience on Windows, Linux, Android, and plans for macOS and iOS. PikaTorrent emphasizes user-friendliness, allowing users to stream and download torrents seamlessly, with features like remote management and dark mode support enhancing the overall experience. -
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Rocket.Chat Android
Legacy mobile Rocket.Chat client in Kotlin for Android
Rocket.Chat is a free and open-source team chat collaboration platform that allows users to communicate securely in real-time across devices on the web, desktop or mobile and to customize their interface with a range of plugins, themes and integrations with other key software. By opting for Rocket.Chat, users also benefit from free audio and video conferencing, guest access, screen and file sharing, LiveChat, LDAP Group Sync, two-factor authentication (2FA), E2E encryption, SSO, dozens of OAuth providers and unlimited users, guests, channels, messages, searches, and files. Users can set up Rocket.Chat on the cloud or by hosting their own servers on-premises. -
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Jitsi Meet
Secure, simple and scalable video conferences application
Go ahead, video chat with the whole team. In fact, invite everyone you know. Jitsi Meet is a fully encrypted, 100% open source video conferencing solution that you can use all day, every day, for free — with no account needed. Head over to meet.jit.si and see the service in action before you decide whether you’d like to run your own instance. For those interested, check out the meet.jit.si terms of service and privacy policy. Yep, it’s free — and it’s technologically advanced, too. In fact, Jitsi Meet sounds better, thanks to HD audio with Opus; is anonymous, no need for an account, ever! It also keeps conversations private with encryption by default (and advanced security settings) and is developer-friendly, modify and customize it to your heart’s content. It’s 100% open source. Trade messages and emojis while you video conference, with integrated chat. -
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Simple SMS Messenger
An easy and quick way of managing SMS and MMS messages without ads
A great way to stay in touch with your relatives, by sending both SMS and MMS messages. The app properly handles group messaging too, just like blocking numbers from Android 7+. Keep in touch with all of your contacts using the messaging app on your phone. It's never been easier to share photos, send emojis, or just say a quick hello. There's so much you can do with your messages, like mute conversations or assign special message tones for certain contacts. With this text message and group messaging app, you can enjoy daily private messaging and group messaging in a more fun way. It offers many date formats to choose from, to make you feel comfortable at using it. You can toggle between 12 and 24 hours time format too. This app also gives you the flexibility of SMS backup. This way, you don't have to save the messages on any external device or use any other hardware to save them. -
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BitComet
Free and powerful BitTorret client
BitComet is a free and powerful BitTorrent client that allows users to download and share large files over the peer-to-peer (P2P) network. Known for its efficiency and ease of use, BitComet supports not only torrent files but also HTTP and FTP downloads, offering versatility for different download needs. Its intelligent file-sharing algorithms optimize bandwidth usage and improve download speeds, making it a popular choice for downloading large files like videos, software, and games. Additionally, BitComet includes features such as long-term seeding to improve download availability, previewing media files while downloading, and a built-in download scheduler. With its lightweight design and extensive functionality, BitComet is a reliable tool for both novice and experienced users looking to manage their downloads effectively. -
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Facebook SDK for Android
Used to integrate Android apps with Facebook Platform
This open-source library allows you to integrate Facebook into your Android app. Integrate your Android app with Facebook to build engaging social apps by using the Facebook SDK for Android. To learn more about using Facebook development tools. The current version of the Facebook SDK for Android is version 11.2.0 and requires the Android API 15. Code and samples for the Facebook SDK for Android are available on GitHub. A secure and convenient way for people to log into your app or website by using their Facebook credentials. Enable people to post to Facebook from your app. People can share, send a message, and share to stories. Understand people's actions in your app and measure the effectiveness of your Mobile App Ads. Get data in and out of Facebook's social graph, query data, post stories, upload photos and perform other tasks. -
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Element X Android
Android Matrix messenger application using the Matrix Rust SDK
Element X Android is a modern, reimagined Matrix-protocol client designed for Android that provides secure, decentralized communication with a focus on performance, polished UI, and extensibility. Built as the successor to earlier Matrix clients, Element X blends fast native Android development with a feature-rich experience that supports end-to-end encrypted messaging, voice and video calls, threaded conversations, and file sharing across federated Matrix servers. Unlike proprietary messaging apps, Element X connects to any compliant Matrix server, letting individuals host their own or join communities without centralized control, while still benefiting from robust cryptographic protections that ensure only intended recipients can read conversations. The app’s UI emphasizes responsiveness and ease of use with modern navigation patterns, customizable themes, and intuitive controls for group chats and spaces (Matrix’s equivalent of servers or room collections). -
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Signal
A private messenger for Android
Signal-Android is the official open-source Android client for Signal, a secure messaging app focused on end-to-end encryption and privacy. Developed by the Signal Foundation, it enables private messaging, voice, and video calls, without storing user data. Signal uses the Signal Protocol for encryption and does not collect metadata, making it one of the most privacy-focused communication platforms available. -
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Simple Contacts
Easy and quick contact management with no ads, handles groups
A lightweight smart contact app for managing your contacts loved by millions of people. The contacts can either be stored on your device only, or they can also be synchronized by different means. This phone number smart contact phone book will help you keep your contacts in one place without the hassle of backing up your contacts as the contacts backup are always in sync with the contacts you add. This app light on space and is effective when you have to make contacts backup and keep a phone book that will help you in smart contact keeping. You can use it for managing user emails and events too. It has the ability to sort/filter by multiple parameters, and optionally display surname as the first name. This way, you can achieve smart contact retrieval in a quick way. You don't have to scroll down to find your required contact. Moreover, whenever you add a new contact, the contacts backup automatically ensuring the integrity of contacts. -
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Android Upload Service
Easily upload files in the background with progress notification
Easily upload files (Multipart/Binary/FTP out of the box) in the background with progress notification. Support for persistent upload requests, customizations and custom plugins. At the core of the library, there is a Service that handles multiple concurrent upload tasks in the background. It publishes broadcast intents to notify status. This way the logic is completely decoupled from the UI. You are safe launching upload requests from your fragments, activities and services without worrying about locking the thread in which you are. Check the wiki to learn how you can use it in your App. You are also safe if your app is put in the background. All the uploads will continue to be executed also when your device is idle. Bear in mind that if you kill your app, the service gets killed as well, as it's attached to your app's process and all the currently running uploads will be terminated abruptly. -
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Meshenger
P2P Voice/Video phone App for local networks
Meshenger is an open-source, serverless P2P voice and video calling app for Android that works over local networks or directly between devices without the internet. It facilitates direct communication using QR codes or IP addresses, bypassing the need for any central infrastructure or account registration. Meshenger is particularly suited for emergency scenarios, privacy-focused users, and mesh networks where conventional communication tools fail. It emphasizes minimalism, transparency, and full decentralization.