Productivity

1843 open source Productivity apps

K
Kill Domain Verification
APK
Kill Domain Verification is an Xposed module which prevents the system (and also yourself) from allowing apps to always open supported links. It also enables you to open supported links in apps which are not "verified" on Android 12 and above.Module function: always ask when opening http / https links, instead of opening directly in the appSide effect: Can't open the link directly in the app even if you set it manually; Android 12+ will show the unverified app when you select itTheoretical support for Android 6 and later.
GitHubIzzyOnDroid
Kin Nai D
APK
Is it hard to decide what to eat for lunch? Let 'Kin Nai D' help you choose what you want to eat!
F-Droid
KineticE Speedometer
APK
KineticE-Speedometer is a GPS (for now) speedometer with a non linear gauge. The gauge nicks are set on a non linear scale that is proportional with the kinetic energy that a mass of 1kg will have at the particular speed.
GitHubIzzyOnDroid
KingInstaller
APK
KingInstaller lets you install packages "as Google Play Store", to work around restrictions. Useful (not only) for Android Auto.Once you have this app installed, you need to grant it two permissions from within Settings › Apps: the permission to Allow access to manage all files (via Special app access › All files access › KingInstaller), and via all apps › KingInstaller › Install unknown apps check Allow from this source.UsageIf the .apk is already installed: Uninstall it firstOpen KingInstallerClick Select file ... and select the .apk to install.¹Click Install as king¹Wait for text-field with .apk file-path to clearValidate if package installed "as Google Play Store"¹¹ For optional settings, as well as the verification steps, please see the app's repo.
GitHubIzzyOnDroid
KitchenOwl
APK
KitchenOwl is a smart self-hosted grocery list and recipe manager. Easily add items to your shopping list before you go shopping. You can also create recipes and get suggestions on what you want to cook. Track your expenses so you know how much you've spend.
F-DroidGitHub
Klick'r - Smart AutoClicker
APK
Klick'r is an open-source Android application designed to automate repetitive tasks effortlessly. Formerly known as Smart AutoClicker, Klick'r offers unique image detection capabilities alongside traditional auto-clicking functionalities, providing a versatile solution for all your automation needs. Whether you’re a gamer automating in-game actions, a tester simulating user interactions, or anyone performing repetitive clicking tasks, Klick'r offers both image detection for sophisticated automation and a Regular Mode for straightforward auto-clicking. ## Key Features: * **Click and Swipes**: Automate clicks and swipes with precision by configuring press durations, swipe durations, and positions. Trigger actions on detected images to interact seamlessly with dynamic elements. * **Advanced Automation**: Enhance your automation scripts with advanced features like counters operations, Android Intents, and flow control, giving you unparalleled flexibility. * **Triggers**: Set up sophisticated triggers based on image detection, timers, counters, and Android broadcast receivers to perfectly tailor your automation tasks. * **Regular Mode**: Enjoy a straightforward auto-clicking experience with our Regular Mode, designed for easy configuration and ideal for simpler, repetitive tasks. * **Tutorials**: Learn to master Klick'r with our interactive game tutorials, which provide step-by-step instructions to help you automate tasks and beat the game using Klick'r's powerful features. * **Open Source**: As an open-source project, Klick'r is continuously improved by a dedicated community.
F-DroidGitHub
Kolab Client
APK
A synchronisation provider for contacts and calender, integrating with Kolab or IMAP servers. Status: Currently, this is a developer preview. The project can eat all your data. (Calendar sync probably only works for Android 4 on 0.9.5-ICS).
F-Droid
Komodo Wallet
APK
Komodo Wallet is a cross-platform cryptocurrency wallet and decentralized exchange (DEX) that supports multiple blockchain networks. It provides secure storage for various cryptocurrencies and enables peer-to-peer trading through atomic swaps. Features: * Multi-coin wallet supporting various cryptocurrencies * Decentralized exchange (DEX) functionality * Atomic swap technology for trustless trading * Cross-platform support (Web, Desktop, Mobile) * Secure private key management * Support for UTXO and ERC-20 tokens * Hardware wallet integration (Trezor) The application is built with Flutter and uses the Komodo DeFi SDK for blockchain interactions. It provides a user-friendly interface for managing digital assets and participating in decentralized finance.
F-DroidGitHub
Koofr Vault
APK
Koofr Vault is an open source, client-side, zero-knowledge encrypted storage application by Koofr. Unlock enhanced security for your files. Discover a better way to securely store and access your photos, videos and documents. Included in all Koofr plans, even in the free one. Start using Koofr Vault now to make your life more secure. First time users must create a free Koofr account. Access everything through the Koofr Vault mobile app for Android. With Koofr Vault for Android you can: • create new Safe Boxes, • upload files or folders to your Safe Boxes, • download your files to your phone or open them in different apps, • take a photo and store it in your Safe Box, • use biometrics to unlock Safe Boxes. All Safe Box files are encrypted or decrypted by your device on demand as you access them. Since your Safe Key, only known to you, is required to decrypt cloud content, only you can access the files. Neither your Safe key nor any other unencrypted file data or metadata is sent to or stored by Koofr. The cloud has never been safer! Need help? Contact our support team at support@koofr.net.
F-DroidGitHub
Kotlin Quiz
APK
Kotlin Quiz is an engaging Android application that allows users to test their knowledge in Kotlin Programming language through fun and interactive quizzes. This app is built with a clean code architecture following the MVVM pattern, ensuring maintainability and scalability. The app comprises three main layers: App (Presentation), Domain, and Data, each with its unique set of responsibilities.
F-DroidGitHub
Kriptofolio
APK
This app will track all your cryptocurrencies in one place and let you know how much they are worth converted to fiat money.The important thing for the user is that this app is going to ensure 100% trust. It will not require any login/registration process. It won’t collect users’ data by sending it to the server. Users’ provided data about cryptocurrency investments will be only stored inside a local database that is kept inside an Android device. However, to know the portfolio’s value converted to the fiat money, the app is going to use the Internet to get the latest conversion rates.As the topic of money for people is so sensitive, to ensure trust, this app. is being developed openly by creating blog posts series and making the project code available so everyone can see that there is nothing to hide.
GitHubIzzyOnDroid
KryptEY
APK
Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE. No server needed. #ChatKontrolleStoppen Why KryptEY? Breaking of end-to-end encryption (E2EE) by laws such as the planned EU chat control is an ongoing issue. Content in messengers that use E2EE, such as Whatsapp or Signal, could thus be monitored by third parties. E2EE is often, but not always, standard in messengers. There are proven methods for E2EE such as PGP. However, these methods are sometimes cumbersomely integrated and require a lot of effort to use. KryptEY is an Android keyboard that implements the Signal protocol. The keyboard works messenger-independently and both the X3DH Key Agreement Protocol and the Double Ratchet Algorithm work without a server, thus it enables a highly independent use of the protocol. Features Based upon Simple Keyboard ( https://github.com/rkkr/simple-keyboard ), KryptEY adds a view above the Keyboard for the E2EE functionality. * use E2EE through Signal Protocol in any messenger * encryption/decryption of messages * enter message through separate text field in keyboard * use clipboard to read messages * manage contacts in own contact list in keyboard * message log to view sent/received messages * send messages as plain JSON (raw mode) or hidden in a decoy text (fairytale mode) * verification of E2EE functionality via fingerprint * Q&A View for questions * dark & light theme See https://github.com/amnesica/KryptEY/blob/master/KRYPTEY.md for further information on how KryptEY is working. Security The existing security properties for the Signal Protocol are also valid for the keyboard. Limitations The keyboard was designed as a POC and only allows 1-to-1 conversations. However, the application can also be used in a group chat to a limited extent. Here, a message can be directed to a specific chat partner and not to all people. Other participants of the group chat cannot decrypt the message. Text messages in Telegram are getting copied as HTML and not as plain text. When decoding the message with the fairytale mode the copied message is compromised and can't be read properly. Therefore, it can't be decoded at all. However, the raw mode works properly. When using KryptEY with Telegram we recommend the raw mode. Some messengers like Threema only allows up to 3500 bytes per message. Therefore, different character input limitations apply. To stay under the 3500 bytes limit, only 500 characters are allowed for raw and fairytale mode. For convenience these limitation applies for all messengers. Demo For a demonstration on how KryptEY is used see https://github.com/amnesica/KryptEY/tree/master#demo KryptEY was created by mellitopia and amnesica. The code is open source and can be found at https://github.com/amnesica/KryptEY
F-DroidGitHubIzzyOnDroid
Kuaizi IME
APK
筷字输入法 (Kuaizi IME) is a system based on the combinatorial features of Chinese Pinyin. It is an efficient and fast input method editor, suitable for electronic touchscreen devices. 筷字输入法 (Kuaizi IME) abandones the traditional method of tapping on virtual keyboard keys one by one, it instead offers a swipe input method for Pinyin, combined with the combinatorial features of Pinyin letters. The key layout is designed to make Pinyin input more accurate and convenient. 筷字输入法 (Kuaizi IME) provides editing support such as cursor movement and text selection for the target editor, thereby eliminating the frustration of being unable to accurately position inputs and text due to the small screen size of mobile devices. This further enhances text input and editing efficiency on small-screen devices. User-data generated by 筷字输入法 (Kuaizi IME) is stored locally. It does not connect to the internet and will not collect nor analyze user data or behavior habits. Furthermore, it does not support or provide predictive input nor fuzzy matching mechanisms. To some extent, this input method editor aims to enhance the users' ability to recognize and memorize Chinese characters and Pinyin, ensuring that the reliance on digital tools does not lead to the gradual forgetting and eventual abandonment of 「汉字」(Hànzì, Chinese characters), a treasure of Chinese civilization.
F-DroidGitHub
Kvaesitso
APK
Kvaesitso is a launcher application for Android which replaces the device's default home screen. It has been built from scratch, meaning it is not based on the AOSP launcher (like many other third party launchers) nor does it try to recreate this launcher. Instead, Kvæsitso follows its own concepts.The main feature is a global search which does not only let you search on device for apps, contacts, and calendar events, but also on web services like Wikipedia or your Nextcloud Instance. Additionally it includes some useful tools, for example a calculator and a unit converter. You are looking for a document or an information? Just search for it and Kvæsitso shows you the fastest way to it.
F-DroidGitHubIzzyOnDroid
Kõnele service
APK
Kõnele service is an Android app that offers a speech-to-text service to other apps, in particular to Kõnele. It implements SpeechRecognizer, backed by an open source speech recognition server software named Kaldi GStreamer server.
GitHubIzzyOnDroid
LBalance
APK
LBalance is an app that uses the acceleration sensors of the device to move graphical objects on the screen. LBalance can also be used as a protractor or spirit level. Several graphical representations have been implemented. Beside own creations there are layouts inspired from the layout of known similar apps. The different layouts can be switched by the user. Also exists an overview display for direct selection. The calibration of the angle display follows the pattern of simple apps of this kind and applies to each main orientation of the device separately.
F-DroidGitHub
LCTerm
APK
LCTerm is a free and open-source Android Point-of-Sale application designed for merchants to accept and verify cryptocurrency payments. It runs on all android devices but was designed for android point-of-sale devices with a thermal receipt printer. It supports multiple assets, QR code generation, conversion at current market values, local currencies, and receipt printing, to enable point of sale transactions. LCTerm is not a wallet and holds no funds, rather it verifies the customer payments are made to addresses specified by business owners. To use LCTerm a merchant must have an API key available at Vericeive.com. This project is developed by Vermont Secure Computing and is fully open source for transparency and community trust.
F-DroidGitHub
LMd - Le Monde diplomatique DE
APK
Reader for subscribers of the german version of Le Monde diplomatique Please note that the language of the app is german!
F-DroidGitHub
LSPatch
APK
LSPatch is a rootless implementation of the LSPosed framework, integrating Xposed API by inserting dex and so into the target APK. It requires at least Android 9 to work – and in theory supports Android versions up to the same as LSPosed itself.
GitHubIzzyOnDroid
L
La et Le
APK
La Et Le is a minimalist Android app for learning the grammatical gender of French nouns (“le” or “la”). The app uses a spaced repetition system (SRS) and a frequency-ranked list of nouns to help learners memorize efficiently. Features: - Learn and review French noun genders - Spaced repetition scheduling - Audio pronunciation samples - Progress statistics and streak tracking - Customizable reminders - Wiktionary links for each word No ads, no tracking, no proprietary services.
F-Droid
Ladefuchs
APK
HOW MUCH IS THE ELECTRICITY FOR YOUR EV CAR? Find the cheapest charging plan fast as lightning. With just one finger swipe, Ladefuchs shows you the cheapest charging plan at the charging point. Not more, not less. The app is free. However, the little Ladefuchs (Chargefox) is always happy like a young badger about food donations. He always cheeps a bit then. The app is targeted to the German EV charging market and in German language only currently. Who is actually to blame? ------------------------- * Malik & Flowinho of audiodump.de * Bastian ’Schlingel‘ Wölfle of bitsundso.de * Dominic Wrege * Sven Raskin * Illu: Aga und Marcel-André Ideas? Bugs? ------------ Plese send to android@ladefuchs.app Anti-Features ------------- * Non-Free Network Services - The app accesses an own API server, which in turn retrieves data from chargeprice.app. Permissions ----------- * INTERNET - Acces to own API server * ACCESS_NETWORK_STATE - Check whether internet connectivity is available before trying to access the API server
F-DroidGitHub
Lalumo
APK
Lalumo - Discover Music with Heart and Ear With Lalumo, young children dive into the colorful world of music! In a playful way and with lovingly designed animal characters, they explore pitch, melody, timbre, and rhythm - no prior knowledge needed. Musical concepts are experienced intuitively. What can your child expect in Lalumo? - Children recognize pitches by listening and pressing the right animal. - Child-friendly activities - Listen to familiar children's songs and decide if they sound right or “wrong” - Choose animals that match pleasant or strange-sounding melodies - Explore rising, falling or jumping melodies What parents can expect - No ads, no in-app purchases, open source - You can lock the screen to the current activity, full screen and so that you can't press on any other element on the screen Intuitive navigation - Picture-based interface with a bird as a play button and animals to press as answers. Beautiful illustrations The scenes resemble hand-painted picture books: warm, calm and full of charm. Fully usable offline, distraction-free - just music, play, and joy. Perfect for preschoolers, parents who want to support early musical learning, and educators who want to introduce children to worlds of sound.
F-DroidGitHub
Lane's Lexicon
APK
Lane's Lexicon is an Arabic-English dictionary compiled by Edward William Lane (17 September 1801 - 10 August 1876)
F-DroidGitHub
Language Dex
APK
Keep track of your growing vocabulary through custom dictionaries. Every word is defined by you! Each definition can be adapted over time as your understanding improves. Features: Specify part of speech, definitions, examples, and pronunciation for every word. Paste excerpts into the reader to see existing definitions and easily add new words. Practice with puzzles that test your knowledge, spelling, and ability to recall words. Specify your confidence level to affect how often a word appears in practice games. View language stats and share with friends.
F-DroidGitHub