Productivity

1843 open source Productivity apps

10,000 sentences
APK
10,000 sentences is an app that will help you learn new words in your target languages: You will be presented with a series of sentences where you need to guess the order of words. If your guess is correct, the app will find a new (and slightly more complex) sentence. The application currently has 24 languages. Each language is available in two "directions". For example "French for English speakers" and "English for French speakers". More languages will be added in future. If you want to check the translations for words, make sure you have Google Translate installed. The application uses "text-to-speach" (TTS), but not all languages are available on all Android phones. Some languages have also commercial TTS engines available on Google Play. NonFreeNet: Puzzles are downloaded from storage.googleapis.com
F-DroidGitHub
10-bit Clock Widget
APK
10-bit Clock Widget presents current time on your home screen using binary coded decimals. Features - 12-hour display format (default) - 24-hour display format - Use custom colours 10-bit Clock Widget is free and open-source software. https://github.com/ashutoshgngwr/10-bitClockWidget
F-DroidGitHub
11 Cell Network Changer
APK
Cell Network Changer opens the Android Phone info menu letting you change your cell network type. You can force your phone to use any network type. You can see information about your phone's sim card and cellular data. You can also run a ping test on your phone.This works on Android 11 and newer. You can also simply dial *#*#4636#*#* to open the same menu, which works at least on Android 2.3 and higher.
IzzyOnDroid
12345 - Learn Counting
APK
Count objects on images and choose their number. This game features multiple levels with over 50 images to count. The app speaks in Welsh (Cymraig), English and German(Deutsch). Each of the levels add new, higher numbers to count. If you and your child like to play an additional game mode, please do not hesitate to contact us. If you are a developer or want to become one, you can extend the game with the modes you would like to see in it. If you like to create a new level, it is quite easy to take a few pictures for it and get in contact. The game is an open-source software under AGPL so that you are allowed to copy, distribute and modify it. Code of honor: This game is child and privacy friendly: - no advertisement - no communication over the Internet - source is open and publicly disclosed - no in-app puchases
F-Droid
16-bit Clock Widget
APK
Binary Clock composed of a 4x4 grid of dots. It works by dividing the day into 16 bits, or 65536 parts. That makes each "second", or bit, last exactly 1.318359375 real seconds.
F-DroidGitHub
1
1List - Simple Lists for TODO, Shopping, Movies...
APK
1List is a simple app to manage several lists from only one screen. Add items to a list with only one click. Browse, view, organize your lists from only one screen. Features : - User friendly lists management and smooth navigation - Add, delete, edit items in your lists - Move items within your lists - Mark items as done or undone - Add comments on each items - Create an unlimited number of lists - Move, edit, remove your lists ... more to come in the near future
F-DroidGitHub
24h Analog Clock
APK
A widget that provides a resizable 24 hour analog clock, with noon at the top and midnight at the bottom. The widget passively accesses the phone's location and if it gets a fix, will display sunrise, sunset, and twilight times on the clock face.
F-DroidGitHub
8-Bit Wonders
APK
8‑Bit Wonders – Retro Commodore Emulator & Game Center Step back into the golden age of computing with 8‑Bit Wonders, the all‑in‑one emulator that brings classic Commodore systems to your modern Android device. Play old‑school pixel games, explore vintage software, or enjoy new creations built in the iconic 80s style — all with the convenience and power of today’s hardware. Whether you're reliving childhood favorites or discovering retro computing for the first time, 8‑Bit Wonders delivers an authentic yet modernized experience. The app supports a wide range of classic Commodore 8‑bit computers: C64, VIC‑20, PET, C128, Plus/4, and C16. It runs smoothly on phones, tablets, and Android TVs, offering broad compatibility across modern devices. You can use hardware joysticks, gamepads, mice, a virtual touch joystick, and both hardware and virtual keyboards with customizable layouts. Save states and a built‑in time‑machine feature let you rewind gameplay and undo mistakes at any moment. For an authentic retro look, CRT emulation recreates the feel of classic displays. All disk and tape formats supported by VICE are fully compatible. The app includes an initial library of systems and preinstalled games, and you can expand it by adding your own save states, downloading content directly from archive.org, or importing additional games and applications as 8bw or rp9 files, including those created with tools like C64 Forever. You can customize your controls by mapping buttons to keystrokes or enabling auto‑fire. A dedicated demo mode lets you play audio in the background or run visual demos in a clean movie‑screen view without Android UI elements. 8‑Bit Wonders is still in development, and your feedback helps shape its future. Share what you enjoy, what needs improvement, and what you would change at: https://eightbitwonders.gitlab.io/app/feedback/ The app retrieves content from archive.org, github.com, gitlab.com, and zimmers.net. . It does not collect personal data; only your public IP address is shared with those services when downloading content.
F-Droid
8Vim Keyboard
APK
8Vim Usability Guide So, what capabilities does 8Vim have? Once you know how to type with this thing (Learn how to type with this original [8Pen-game video](https://www.youtube.com/watch?v=99vsUF4NuLk), you must know the following Basic Needed Stuff Right Sector acts as a backspace Key. Bottom Sector acts as a Enter Key. Top Sector acts as a combination of SHIFT and CAPS_LOCK Key, i.e, Press once Shift is active, Press Twice CAPS is active and Press once more and everything is back to usual. Left Sector acts as the button that takes you to the Number Pad. Cursor Movements If you move your finger from the centre-circle to any sector and stay, the cursor movement will be emulated. For example, if you swipe from circle->right, the cursor will move right. You get the picture. Selection There is selection built in to the keyboard. if you move your finger from the right sector to the circle, the cursor will start moving left and selecting everything in it's path. once you release, a selection keyboard will open up for various stupidities to do. Paste Functionality Moving your finger from right->circle->lift-your-finger performs a paste. whatever is in the clipboard.
F-DroidGitHubIzzyOnDroid
AAT Another Activity Tracker
APK
* Display live tracking on different cockpit and map views * Store tracks in standard GPX format for sharing with other applications * Display offline as well as tile based maps * Tile based overlays for displaying cycle and hiking routes (Waymarked Trails) * Integration of Overpass and Nominatim (Search and POI) * Display Offline POIs from Mapsforge compatible Databases * Simple GPX editor for quick route planning * GPS independent altitude information and hill shading * Support for Bluetooth and internal sensors
F-DroidGitHub
ABCore
APK
ABCore is a wrapper for Bitcoin Core for Android. Bitcoin Core (formerly Bitcoin-Qt) is the bitcoin daemon software based on the original reference code by Satoshi Nakamoto. It is programmed to decide which block chain contains valid transactions. The users of Bitcoin Core only accept transactions for that block chain, making it the Bitcoin block chain that everyone else wants to use. It is these users who keep Bitcoin decentralized. They individually run their own Bitcoin Core full nodes, and each of those full nodes separately follows the exact same rules to decide which block chain is valid. There's no voting or other corruptible process involved: there's just individual software following identical rules—"math"—to evaluate identical blocks and coming to identical conclusions about which block chain is valid.
F-DroidGitHub
ADB Clipboard
APK
Secure Clipboard Sync for DevelopersAdbClipboard enables seamless clipboard synchronisation between your Android device and development PC through ADB - no external servers, no internet required, no data leaving your network.Perfect for Restricted EnvironmentsWhilst many clipboard sharing solutions rely on external servers, AdbClipboard works entirely through your local ADB connection. Ideal for developers in banks, government agencies, and enterprise environments where external clipboard services are blocked for security reasons.Key Features:Automatic PC to Android sync - Copy on PC, paste instantly on AndroidManual Android to PC sync - Tap floating window to transfer clipboard contentZero internet dependency - Works completely offline through ADBUltra lightweight - Minimal app footprint and resource usageUSB and WiFi support - Connect via cable or wireless ADBSecurity focussed - No internet permission, all data stays localHow It Works:The app uses a floating window overlay to access Android's clipboard (due to Android security restrictions). When you copy text on your PC, it automatically appears on your Android clipboard. To copy from Android to PC, simply tap the AdbClipboard floating window.Requirements:ADB debugging enabled on your devicePython script running on your PC (included with download)"Display over other apps" permission for floating windowPrivacy and Security:No internet permission requestedNo external servers or cloud servicesAll clipboard data remains within your local networkPerfect for security-conscious development environmentsFor Developers OnlyThis tool is specifically designed for Android developers who need reliable clipboard sync during development and testing workflows.Download the companion Python script from: github.com/PRosenb/AdbClipboardStreamline your development workflow with secure, local clipboard synchronisation.
GitHubIzzyOnDroid
ADB Over Network
APK
ADB Over Network is a simple switch for adb (Android Debug Bridge) over network. Supports the new Tile API which add in Android N, so you need a Android N device to use the tile. But other functions also work well in Android 4.0.
GitHubIzzyOnDroid
ADBio
APK
ADBio is a widget that enables/disables the Android Debug Bridge (ADB). It allows to enable and disable USB debugging with a single button on the home screen. A single tap and USB debugging will be toggled on, or off, immediately. No need anymore to visit the settings page for this simple act!
F-DroidGitHub
ADBungFu
APK
appOps manager / ADB simulator for rooted devices ONLY (#su Magisk). USE WITH CAUTION. Up-left white spinner to select appOps or icon/Launcher usefullest RUN_IN_BACKGROUND shortcut. Apps are grayed for empty uses & listed with time durations for active ones. You can use icon/Launcher shortcut or sort option to toggle +/- ☢DARK/System apps (use with extreme care!). Run it to re-enabled frozen apps. - Action button now includes exp. features: refresh (trim in once all app/caches ,refresh, reset appops) perform idle maintenance now pm list libraries pm list permission-groups am stack list $ adb shell ____ (w.i.p. interpretor: No safeguards) List all ADB cmds (w.i.p. pro-active _Help: can cause bootloops) Selinux detection Reset for all appOps, be aware: it will wipe all your previous aosp appOps settings. List all whitelisted apps profman ALL: extract all app's _profman to local Documents/ADB_profman/* BackgroundRestrictor's fork/hack with all appOps not requiring aosp/sOpPerms i.e. the permission-less ones. Compatible since sdk22 Lollipop-mr1 : https://android.googlesource.com/platform/frameworks/base/+/refs/heads/lollipop-mr1-release/cmds/appops/src/com/android/commands/appops/AppOpsCommand.java#46 prim-origin https://github.com/MrBIMC/RunInBackgroundPermissionSetter Icons License is (GPLv3 compatible) CC_BY: https://www.gnu.org/licenses/license-list.html#ccby source http://www.softicons.com/android-icons/mad-ginger-icon-pack-by-madeliniz/adb-wireless-icon ref. [mAd GiNGeR Icon Pack] modified with foreground layer addition: text["__#"] color[C86400] author Madeliniz http://madeliniz.deviantart.com/
F-Droid
AFReplacer
APK
This tool allows You to quickly replace custom watchface in Mi Fit. This way You can use 11 custom watchfaces at one time, and there is no need to remember all internal file names. You can also replace watchfaces directly from https://amazfitwatchfaces.com This tool only replaces watchfaces in Mi Fit. No direct gadget touching - watchfaces are applied via an official application = more safe usage.
F-DroidGitHub
AIProute
APK
This app allows you to add specific IP routes on Android to route the IP traffic. It is possible to set address, netmask, gateway and metric. Due to the nature of the "ip route" command, root access is necessary. It is possible to apply routes based on the active SSID, to ensure the route is only applied in the correct Wifi network. If it is set, the routes are applied during the Android boot.
F-DroidGitHub
APK Explorer & Editor
APK
APK Explorer & Editor (AEE) includes a set of open-source tools mainly designed to explore the contents of an installed application on an Android device. Additionally, AEE offers a feature-rich APK/Split APK's/App bundle installer which allows users to pick and install files from device storage. Please Note: This is the full version of AEE. The Google Play version lacks editing capabilities as well as features such as APK/App Bundle signing. Features * A beautifully designed list view of installed applications. * Explore an installed application or APK file picked from the device storage and navigate through its contents. * Export and easily manage (install, share etc.) APK's/Split APK's into device storage. * Includes a feature-rich APK/Split APK/App bundle installer (easily pick and install files from device storage) * Easily extract app icons by single-clicking on them. * Provides basic information about important resource files. * View graphics, texts, binary XML, and many more. * Save/Export individual resource files to device storage. * Edit text/binary XML files using an in-built text editor (still, a bit buggy when working with too huge APK's). * Delete or replaces resources. * Assemble modified smali files into new classes (.dex). * Decode and view the contents of "resources.arsc". * Create signed APK's/App Bundles after the above-mentioned processes. * Resign APK's/bundles with AEE custom key. * Elegantly designed user interface with an auto-dark/light theme. * A lot more. Translations Please help me to translate this application via POEditor. You may also translate after downloading the original language string available GitHub. Documentation - How-To
F-DroidGitHubIzzyOnDroid
APK Extractor
APK
APKExtractor is a simple APK extractor supporting split APKs and saving them as single APK. It lets you choose where to save the extracted files.
F-DroidGitHubIzzyOnDroid
APK Kit
APK
APK Kit lets you quickly query, export or share apps installed on your device. It supports the data in the external storage space of the app and the obb data and apk, packages them into a zip and sends that to the other party (mainly for games containing Data, Obb data). This tool supports fuzzy search and multiple sorting methods to quickly locate and find applications.
GitHubIzzyOnDroid
APKUpdater
APK
APKUpdaterAPKUpdater is an open source tool that simplifies the process of finding updates for your installed apps.It provides similar functionality to an app store, but instead of depending on a single source, it aggregates the results from APKMirror, Aptoide, F-Droid and GitHub.The 3.x branch is a full rewrite using modern technologies like Jetpack Compose, Flow and WorkManager.FeaturesUpdate Sources: Find updates from APKMirror, Aptoide, F-Droid and GitHub.Search Sources: Find new apps to install from APKMirror, Aptoide, F-Droid and GitHub.Schedule background update checks and receive a notification when updates are found.Supports Android 5 (21) to Android 14 (34).Supports Android TV.Material Design 3 with Dark, Light and System theme support.Supports Material You on Android 12+.Direct install of updates for sources that support it.Supports installs without user interaction on Android 12+.Root install of updates.No ads. No tracking.Languages: English, Spanish, Dutch, German, Traditional Chinese, Simplified Chinese, Romanian, Italian, Portuguese, Russian, Turkish.
GitHubIzzyOnDroid
APatch
APK
The patching of Android kernel and Android system. A new kernel-based root solution for Android devices. APM: Support for modules similar to Magisk. KPM: Support for modules that allow you to inject any code into the kernel (Requires kernel function inline-hook and syscall-table-hook enabled). APatch relies on KernelPatch. The APatch UI and the APModule source code have been derived and modified from KernelSU. Only supports the ARM64 architecture. Only supports Android kernel versions 3.18 - 6.1 Support for Samsung devices with security protection: Planned Kernel configs: CONFIG_KALLSYMS=y and CONFIG_KALLSYMS_ALL=y CONFIG_KALLSYMS=y and CONFIG_KALLSYMS_ALL=n: Initial support The SuperKey has higher privileges than root access. Weak or compromised keys can lead to unauthorized control of your device. It is critical to use robust keys and safeguard them from exposure to maintain the security of your device.
F-DroidGitHubIzzyOnDroid
AVNC
APK
AVNC is an open source VNC client for Android. It allows you to remotely control any device running a VNC server. Features: - Material Design (with Dark theme) - Configurable gestures - Virtual Keys - VNC Repeater support - Wake-on-LAN support - Built-in SSH tunnel (VNC over SSH) - Picture-in-Picture mode - View-only mode - No-video mode - Automatic Server Discovery (Zeroconf) - Import/Export servers - Clipboard Sync with server - `vnc://` URI support - TLS support (AnonTLS, VeNCrypt) - Tight encoding support
F-DroidGitHub
Aalener Optik-Formelrechner
APK
The Aalener Optik-Formelrechner enables a quick and easy option to calculate a bunch of optical functions. At the moment the following features are implemented: - Paraxial raytracing - Exact raytracing for an object on the opitcal axis - Calculation of oblique crossed cylinders with optional sphere - Calculation of refraction index. - Calculation of relative transmission - Calculation of radii for lenses which are free of spherical aberration or coma - Calculation and visualization for error of refraction, astigmatism, distortion, volume, weight and dimensions of spherical toric lenses - Conversion of Back Vertex Distances (eg. glasses to contact lenses) This application was part of a bachelor thesis for the study program opthalmic optics and audiology at Aalen University. It is meant to check calculations and takes part in the interactive lectures. Please be advised that the whole application is in german only. If you are an optician it is highly possible that you will understand most of the functions by their formula symbols.
F-Droid
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