Messaging
571 open source Messaging apps
Osram Remote
APK
An android app for controlling Osram RGB lights using infrared. Your phone needs to have an IR emitter use this app. Currently only supports built-in IR emitters.
F-DroidGitHub
Otic
APK
Otic lets you stream your Android device's microphone input to the local network using `ServerSocket` and Foreground Service. Otic isn't a receiver, so you must have a custom receiver to receive the audio from the Otic client. Check the README (https://github.com/sakethpathike/Otic/blob/master/README.md) for more details.
F-DroidGitHub
PAIesque
APK
PAIesque helps you to track and improve your cardiovascular health using your heart rate data. It calculates a personalized activity score and monitors your Resting Heart Rate, giving you clear, actionable insights into your fitness progress—all on your device, with no subscriptions or data sharing.Prerequisite To get started, you must first install and configure Gadgetbridge to collect heart rate data from your compatible fitness tracker or smartwatch.How It Works: PAIesque is inspired by public research from the NTNU Cardiac Exercise Research Group (CERG). Their foundational studies on the PAI (Personal Activity Intelligence) metric demonstrates a powerful finding: "Our research shows that those who achieve 100 PAI or more every week over time live on average eight years longer than others." While PAIesque does NOT use the official PAI® algorithm (that is not known anyway), it applies this same, powerful principle: Your score rises faster when your heart works harder - so long both brisk walks and vigorous workouts move you toward your goal.Key Differentiators: Open & Transparent: Unlike “black box” scores, every calculation is based on the disclosed Karvonen Heart Rate Reserve (HRR) method in combination with a simplified Training Impulse Calculation (TRIMP). You always know how your score is determined. Universal & Consistent: Use it with almost any fitness tracker supported by Gadgetbridge (Amazfit, Garmin, Xiaomi, Fitbit, 100+ devices). Your scoring method stays the same even if you change devices. Privacy-First & Local: Everything is processed on your phone. Your heart rate data never leaves your device, and no internet connection or account is required. Note: This is an independent, community-developed application. It is based on public scientific principles and foundational exercise physiology methods but is not affiliated with or endorsed by NTNU CERG, and its score is distinct from the proprietary Personal Activity Intelligence (PAI®) metric.
F-Droid
PAssist
APK
PAssist supports you in providing on-call service in conjunction with an SMS-based alerting system.The application is automatically activated via defined on-call service events in your calendar and performs the following functions during the on-call duties:Triggering of an alarm on the receipt of an SMS from the operations center as well as acknowledgment via SMS after the confirmation of the alarm by the user.Monitoring of the phone signal level and notification in case of bad or off signal level.Automatically control of the ringtone volume based on your day and night profile.Logging of alert incidents with start and end time as well as all associated SMS messages.Monitoring and acknowledgment of periodic test alarms for testing the alarm chain from end to end.Other functions that are available regardless of the current on-call state:On-call event calenderHistory of all alert incidentsIn order to perform the functions of PAssist, PAssist needs to be able to receive and send SMS. As these SMS permissions are no more granted by Google, a compatible SMS adapter is required - S2MSP.
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PWS Watcher
APK
PWS Watcher allows you to monitor the data generated by PWS. The application allows the monitoring of multiple weather stations simultaneously. It works with …realtime.txt generated by Cumulus MXclientraw.txt generated by Weather Displaydaily.csv generated by Ambient WeatherXML file generated by WeeWX
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Paintball Notificator
APK
Simple app to let you know when all teams are ready.
F-DroidGitHub
Pairdrop Snapdrop
APK
Snapdrop can be used to transfer files between phones and laptops on same wifi. The app is a wrapper around the snapdrop project using webview and some javascript interface for downloads.Using Snapdrop is as easy as this:Open Snapdrop app (or visit www.snapdrop.net).Tap on a device name and select files to transfer.Make sure both devices are connected to same Wifi or hotspot.NOTE: You can create hotspot on one phone, connect other devices to it and then transfer files using the app or the website.KNOWN ISSUES:Might not work with VPN enabled on your devices.The app renames all the downloaded files to something starting with Snapdrop_. You'll find these files in your Downloads folder.There are times when it just won't work and there's nothing anyone can do about it. Sorry. Please refresh, restart or try again later.If the problem doesn't go away, report your issue.CREDIT:This app and logo is based on the free and open source Snapdrop project by Robin Linus.APP:Developed by Tanuj. Free and open source. No login, no ads.FEATURE REQUESTS:Features are chosen very carefully because complexity grows exponentially with each other feature. We focus very narrowly on a single use case: instant file transfer. Please don't be sad if we decline your feature request for the sake of simplicity. Thank you for understanding.PRIVACY:None of your files are ever sent to any server. Files go directly from one device to another and are encrypted by default.
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Paperless NGX Uploader
APK
Paperless‑NGX Uploader uploads single or multiple documents to Paperless‑NGX directly from the system Share menu. This project updates and adapts the original “Paperless Share” by qcasey to modern Android versions while keeping the same simple “share and upload” workflow.Features:Android native Share Intent integration (one action = one file).Paperless‑NGX server configuration (URL), username and password.Secure credential storage with automatic recovery on startup.Connection test with feedback (success, invalid credentials, unreachable host).Tag management:Fetches tags from Paperless‑NGX after a valid connection.Tag selection dialog with search/filter.Option to set default tags for uploads.Selected tags are persisted and restored on startup.Uploads the shared document with the configured/default tags.Upload status indicator; on failure, a Snackbar notifies the user.On success, the app returns to background.
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Parcel - Pickup code
APK
This is a free, open-source, ad-free, offline app that prioritizes simplicity and does not collect any personal information. This app automatically parses received SMS messages and extracts the address and pickup code information, which can be displayed on a desktop card (dark mode supported). You can add custom rules to improve the parsing effect. Supports Taobao and Pinduoduo ID codes. It also supports listening to third-party app notifications and automatically saving pickup code messages, making it more convenient for WeChat friends to pick up their packages. Enabling notification listening permissions also allows for background process persistence and real-time updates to the desktop card. Adding a desktop card: Generally hidden in the "All Cards" section at the bottom, under "Plugins" or "Android Widgets". Welcome to download and use! Please submit an issue for any problems or suggestions.
F-DroidGitHub
Party UP!
APK
Send files and links to a copyparty server by sharing them to this app Features: • sha512-verified uploads • stash links and plaintext • display/copy link to the uploaded files • supports HTTP and HTTPS Future ideas: • upload slicing (resumable + usually faster) This can be used to turn a raspi into a very flexible chromecast clone; see the readme for details
F-DroidGitHub
Peace of Mind+
APK
We become more conscious of our phones as our lives become increasingly connected. Would you like to disconnect, if only for a moment? Your phone will go silent and disconnect from the world: no e-mail, no status updates, no SMS and no phone calls. Choose how long you wish to disconnect (up to 12 hours). Originally developed by Kwame Corporation for Fairphone 1, Peace of Mind+ aims simply to bring this beautiful app to other devices, and for future Fairphone-owners patiently waiting to receive their phone! App works without root, but from Android 4.2+ root access is needed to switch to flight mode. Without root access the app will switch the phone to silent mode only.
F-Droid
PhoneAccount Abuse Detector
APK
PhoneAccount Abuse Detector is a simple application to enumerate and detect any application that (ab)uses adding an indefinite amount of PhoneAccount(s) to Android's TelecomManager.What's the background of this? In short: malicious or even just improperly programmed applications can, intentionally or not, block your device from the ability to call emergency numbers. If you are in such a situation, this app helps you to find the culprit – which you then can uninstall (of disable).For details on the vulnerability, check the article by Mishaal Rahman here.
GitHubIzzyOnDroid
Photon
APK
Photon is a cross-platform file-transfer application. It uses http to transfer files between devices.You can transfer files between devices that run Photon. No wifi router is required, you can use hotspot.Features include e.g.:Cross-platform support: For instance you can transfer files between Android and WindowsTransfer multiple files:You can pick any number of files.Pick files faster: Most of the apps use file_picker for picking the files. But for android it caches files before retrieving the paths. If the file size is large it will result in considerable amount of delay. So I have tweaked file_picker to avoid caching(android) unless it is required (some files need to be cached). No matter how many files are selected ,paths will be retrieved within no time. (Note:Caching issue is android specific)Smooth UI: Material You design.Works between the devices connected via mobile-hotspot / between the devices connected to same router (same local area network)Uses cryptographically secure secret code generation for authentication (internally): Even though the files are streamed at local area network,files cannot be downloaded/received without using Photon. No external client like browser can get the files using url,as secret code is associated with url. It will be regenerated for every session.Supports high-speed data transfer: Photon is capable of transferring files at a very high rate but it depends upon the wifi bandwidth. (No internet connection required)
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Pi-hole Droid
APK
Pi-hole Droid makes use of Pi-hole API to obtain all the data. The credentials is locally stored on your device through localStorage.
F-DroidGitHub
PiGrid Companion
APK
The PiGrid Companion app allows you to find and control your PiGrid device/s easily and comfortably via your Smartphone or Tablet. PiGrid is a platform for Gridcoin currently running on Raspberry Pi. Gridcoin is a cryptocurrency that incentivizes the donation of computational power to scientific projects through BOINC. Find more information at pigrid.com and gridcoin.io. AntiFeatures: * NonFreeNet - This app requires a PiGrid device, which contains proprietary software.
F-DroidGitHub
Pijaret
APK
Pijaret is just another rotation encryption tool. WARNING: THIS IS A TOYCRYPTER! DO NOT USE FOR SERIOUS PURPOSE! The main purpose is to create a small encryption tool to make services like Whatsapp or Telegram a >bit< more secure. The system is easy to understand. You share a numeric key with your partner in real life and en/de-crypt some important messages with it. (In case you don't go outside you can just tormail your chat partner or stuff).
F-DroidGitHub
Pixel 5G
APK
In some countries, Pixel doesn't allow you to connect 5G NSA network The default NR config is SA only But with this app and root access you can change the modem NR mode to NSA or event better SA+NSA This app works only on Pixel with samsung modem (Pixel 6-9)
F-DroidGitHub
Pixelix
APK
Pixelix provides a smooth and intuitive interface for interacting with Pixelfed, the federated image-sharing social network. Designed with user experience in mind, Pixelix makes it simple to connect to your Pixelfed instance, upload photos directly from your device, and browse through your feed with ease. Whether you're a seasoned Pixelfed user or just getting started, Pixelix offers a streamlined way to share and discover visual content.
F-DroidGitHubIzzyOnDroid
Platypush
APK
This app provides an easy way to access your Platypush (https://platypush.tech) devices and instances. The app scans for Platypush web services running on your network and offers a way to control integrations (lights, switches, music and media library and playback, cameras etc.) through the responsive web interface provided by the services. Features: * Automatic scan of devices on your network through Zeroconf/Bonjour. * Manual connection to devices not found on your network. Changelog: https://git.platypush.tech/platypush/platypush-app/-/blob/master/CHANGELOG.md
F-Droid
PlayOnDlna
APK
Play YouTube videos ad-free on DLNA players (e.g. Kodi, SmartTV) in your local network! Browse YouTube in your favorite client and share the link to the PlayOnDlna app to play the video ad-free on a DLNA player in your local network. 🎨 Sleek Design A graphical interface reduced to the essentials in a dark design that's easy on the eyes even at night. 💝 Ad-Free Enjoy videos ad-free on your local network. 🤩 Simple Ad-free playback at the touch of a button without complex setup! An automated search finds compatible players on your local network. 👐 Transparency The publicly accessible source code allows anyone to personally verify the quality, privacy, and security. If the app serves you well, consider a 🎁 donation to support my efforts. Kodi Setup To stream videos to Kodi, you have to ensure that Kodi is found as dlna player in your local network. To achieve this, follow the instructions below. 1. Go to ⚙ Settings > Services > UPnP DLNA 2. Enable Enable UPnP support 3. Enable Allow remote control via UPnP ❤️ Happy streaming! ❤️
F-DroidGitHubIzzyOnDroid
Plexus
APK
Remove the fear of app compatibility on de-Googled Android devices. Google Play Services are essential components on most Android devices. They allow you to access your Google account seamlessly and provide Google-specific features for apps that depend on them. However, when you flash custom ROMs without Google Play Services or opt for alternatives like microG, certain apps may encounter issues — either not functioning at all or experiencing limitations in specific features. Plexus provides detailed insights into app compatibility whether you’re using ROMs without Google Play Services (like LineageOS) or ROMs with microG (such as CalyxOS). It helps you identify which apps work, don’t work or have limited features. All the information is crowdsourced by the community, for the community.
F-DroidGitHubIzzyOnDroid
Plug Off Airplane
APK
This is a very simple app that turns off Airplane Mode when the USB cable is plugged in. The idea is to make sure Airplane Mode is turned off at least once a day, in a safe location in terms of metadata: the home. Your telecom already knows your device belongs to its billing address. This makes it easier to use Airplane Mode to disable the cellular radio during the day, when it is not needed.
F-Droid
Pokey
APK
Nostr "Pull Notifications" on AndroidFeatures:Receive nostr notifications directly on your phone with no 3rd parties involved.Add multiple profilesSubscribe to publicationsManage your inbox relays
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Portarius
APK
Portarius is an application that uses Portainer API to manage your docker containers.Features:User managementSee running/stopped containers (and also start/stop and restart them)See container logs, mounts, and statusBiometric authenticationData is stored with AES256 encryptionLight/Dark themeUsage:Have a Portainer service runningConnect to your service (ex. https://portainer.example.com OR http://192.168.x.x:9000)
GitHubIzzyOnDroid