Notes

514 open source Notes apps

Knot
APK
Minimal, memo/note app without option, distraction free, no ads, no tracker, FOSS, only one note possible, simple and fast so every idea can be saved easily with a dark and light mode following the system theme. About the concept and name: An antiquated form of memory aid. The basic idea is that you tie a knot in the corner of your handkerchief the night before you have to perform some task. When you go to blow your nose or wipe your face or perform any of the other actions associated with a handkerchief you will see the knot and remember your duty. Problems arise, however, when it comes to recalling precisely what it is you are supposed to remember. Also, with the rise of the paper tissue, and the decline of the handkerchief, this practice has fallen out of use. Nowadays it is far easier to use a memo app on your mobile phone.
F-Droid
K
Kolab Notes
APK
Take notes locally and optionally sync them with Kolab and IMAP servers in the Kolab v3 storage format. The goal of the app is, to support the full stack of Kolab Notes functionality: notebooks and tags for organising notes is already possible. Also it is possible to edit the classification and color of a note. Formatting the text and inserting inline images works, too. The app is also able to display and edit the color of tags. Since 1.0.0 shared notebooks are supported (which can be toggled in the extended options from the account creation wizard). There are already 2 types of widgets included in the app. One widget is a kind of a "sticky note" widget, it displays the summary and description of a single note. The other widget is a configureable list widget.
F-DroidGitHub
Komelia
APK
Komelia is a client application for Komga, a media server for your comics, manga, BDs, magazines and eBooks. Organize your CBZ, CBR, PDF and EPUB files in different libraries, collections or reading lists. Manage edit metadata for your series and books. Read your books using built-in reader.
F-DroidGitHub
KoreMD (Really)?
APK
KoreMD is a simple, elegant Markdown editor built with Ionic and Vue 3.The name plays on multiple meanings:"Kore MD" = "Is this Markdown?"MD also represents Moldova 🇲🇩 — this project supports Moldovan people and Ukrainian refugees there.Features:Simple & Clean Design — minimal, distraction-free interfaceMarkdown Editor — real-time editing with syntax toolbarLive Preview — switch between edit and preview modesCross-Platform — works on iOS, Android, Web, and DesktopMulti-language — Japanese and English supportCustomizable — adjust font size and font familyImport/Export — easy file managementLocal Storage — your data stays on your deviceFast file transfer via Wi-Fi Direct (no internet required)Moldova support — design inspired by Moldovan flag colorsAbout Moldova Support 🇲🇩This project is designed to support Moldovan people and the Ukrainian refugees living there.The app's design incorporates the color scheme of the Moldovan flag (blue, red, and yellow).Privacy & Security:All files are stored locally on your deviceNo internet connection requiredNo data collectionNo trackingOpen source and transparentMade with ❤️ by PYU224
GitHubIzzyOnDroid
Kotatsu
APK
Kotatsu is a free and open source manga reader for Android. **Main Features:** - Online manga catalogs (with 1100+ manga sources) - Search manga by name, genres, and more filters - Favorites organized by user-defined categories - Reading history, bookmarks, and incognito mode support - Download manga and read it offline. Third-party CBZ archives are also supported - Clean and convenient Material You UI, optimized for phones, tablets, and desktop - Standard and Webtoon-optimized customizable reader, gesture support on reading interface - Notifications about new chapters with updates feed, manga recommendations (with filters) - Integration with manga tracking services: Shikimori, AniList, MyAnimeList, Kitsu - Password / fingerprint-protected access to the app - Automatically sync app data with other devices on the same account - Support for older devices running Android 5+
F-DroidGitHub
LASKmobile
APK
LASKmobile allows you to enter your data at work and sync it with LASK (www.launchpad.net/lask).
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
LabLog
APK
LabLog is a digital laboratory notebook designed to replace traditional paper-based lab records. It allows you to record sensor readings, procedures, and observations in a structured and organized way. Each entry is automatically timestamped, ensuring accurate and tamper-proof records. In addition to text and numeric values, LabLog enables the storage of images, which can be particularly useful for later analysis—something paper notebooks can’t provide. The app differentiates itself by associating each entry with specific data keys, making it easier to categorize, search, and filter entries based on the type of information stored. LabLog is ideal for laboratories equipped with IoT sensors that automatically measure and send data to a server. The app can also send manual entries to the same server using the MQTT protocol, ensuring that human-recorded data is securely stored alongside automated sensor readings. This approach improves both the transparency and reliability of laboratory data. For example, when using analog pH strips, a lab technician can manually input the pH reading into LabLog and send it to the server with other sensor data, ensuring a unified and secure record-keeping system.
F-DroidGitHub
Lampshade
APK
tvtropes.org is a wiki catalogue of the tricks of the trade for writing fiction. Features include: formatting suitable for mobile devices; holo theme (light and dark) and a beautiful ICS look; save articles for later reading; extensive use of the action bar; spoiler functionality; search for articles; and more nifty little things
F-DroidGitHub
LaundryNotes
APK
LaundryNotes is an Android app that allows you to manage the washing instructions for all clothing and fabrics in your home. This application contains the main symbols found on clothing labels, along with their descriptions, to help you remember how to wash each garment effectively and precisely. Have you ever encountered a symbol on a care label that you didn't know what it meant? LaundryNotes allows you to store information for each garment, making it easy to remember how to wash your clothes. Did some symbols may fade away after washing an item? LaundryNotes is completely waterproof! The care instructions will remain on your smartphone. The key features of LaundryNotes include the ability to add any clothing or fabric item to the app, entering washing instructions based on the symbols found on the label or packaging of your garment, the option to add a reference photo for identifying the item, the option to add custom notes for additional information, the option to organize items into categories, and the search function to find items by category or name. The interface of the app has been designed to be simple and intuitive. To add a new item, simply click on the "+" button and fill out the form with the desired information. To view or modify an existing item, simply click on it in the list. To delete an item, press and hold the symbol to open the deletion menu.
F-DroidIzzyOnDroid
LeMondeRssReader
APK
This App for Android 6.0 Marshmallow and later (Android 15) reads RSS stream from LeMonde.fr. Thanks to Web scraping, it renders the article and its comments in the feed directly in native Android components. This App was also built to be as fastest and simple as possible. Material design guidelines were applied so you'll find: - A menu with your favorites and all categories - The ability to refresh the feed with "Pull to refresh" - And to customize the feeds to display - In the settings, a dark mode or a light mode
F-DroidGitHub
Leafpad
APK
A simple notebook for writing text without cloud connections without a database, no permissions needed. It is open source. You can write, edit your notes, and you can hide your notes from prying eyes.
F-DroidGitHub
Lentil Translate
APK
An unofficial Android client for Lingva Translate. Lingva translator is an open-source translator with over one hundred languages available.
F-DroidGitHub
LexinProject
APK
Currently supported: albanska; amhariska; arabiska; azerbajdzjanska; bosniska; engelskt; finska; grekiska; kroatiska; nordkurdiska; pashto; persiska; ryska; serbiska (latinskt); serbiska (kyrilliskt); somaliska; spanska; sydkurdiska; turkiska.
F-DroidGitHub
Library
APK
Library allows you to browse BibTeX files on your Android device. Features include: * Clear presentation of BibTeX entries in a list * Search/Filter * Open associated local files (including file path conversion) * Open URL and DOI links * Minimal permissions * Can load library file from cloud storage via storage access provider (on Android 4.4 and newer)
F-DroidGitHub
Library App VideLibri
APK
VideLibri protects one from missing the due date when borrowing books from public libraries by downloading the list of borrowed books from the library webpage (WebOPAC), renewing all renewable books, and notifying you about non-renewable books, so you do not have to pay late fees to the librarians. Furthermore, the app has all the usual functions of an OPAC. Features: - Tested with 200 public and academic libraries in Germany, Switzerland, and Austria. - Supports 20 different kinds of OPACs from different vendors out of the box. - Custom XPath expressions can be entered in the app to select any data from any website, so any library can be added without compiling the app. - It shows all borrowed books from all library cards from different libraries in a single list, so you can always see which book needs to be returned next. - The list of borrowed books can be sorted by the due date, lending date, lending library, author, title, and other criteria. - The notification about a dooming due date is more reliable than reminder emails sent by the library OPAC since you can never know if an email actually arrives in time. VideLibri on the other hand stores all data on your smartphone, so the due date is always already there and does not need to arrive. - Renewing of borrowed books, manually or automatically before the due date to extend the lending period. - History of all borrowed books, so you can always look back at the books you had borrowed in the past, even after the books were returned to the library and are not shown anymore in the library OPAC. - Turing-complete XQuery search in the history that can answer arbitrary complex queries, like which borrowed book had the longest title and was borrowed more than once? - Search in the OPAC for non-lent books as well as ordering and reserving of non-lent books in some libraries. - Developed since the year 2006, it is the world's first universal library app and any other library app is a VideLibri copycat. - Open-source Some larger public libraries that were tested successfully are for example in the cities Augsburg, GGG Basel, Berlin, Bielefeld, Cologne, Düsseldorf, Lübeck, or Linz, or Munich. The entire list of all tested libraries and OPACs is too long for the app store page, but you can find it at https://videlibri.de/bibliotheken.html . The Android part of VideLibri has been translated into English. However, since most libraries in the list are German, they have German books with German titles. Additional resources like documentation and changelog written for the original VideLibri Windows app in 2006 remain in German. The Windows and Linux app are currently being translated.
F-DroidIzzyOnDroid
Libre Ipsum
APK
Lorem Ipsum is a popular placeholder-text. It's often used for testing layouts and designs. This app generates texts similar to traditional Lorem Ipsum. You can specify how long generated texts should be by selecting the number of words, sentences or paragraphs.
F-Droid
Libre Librivox listener
APK
An unofficial libre application to listen to LibriVox audiobooks. Some features it brings are: Finding books of different genres and languages Searching audiobooks by title, author or language with archive.org's API Downloading audiobooks to play offline Remembering position in audiobook and resume when played again Playing with the application in the background and with the screen turned off User interface in multiple languages (translations welcome!) The application has no ads and is also fully open source under the GPL3 license, so if anything is not to your liking, feel free to contribute!
F-Droid
L
LibreBible
APK
The libre software Latin Vulgate Bible reader for Android.
F-Droid
LibreOffice Viewer
APK
You may know LibreOffice from the desktop - the free and open source office suite (successor to OpenOffice) with over 200 million users worldwide. It's secure and respects your privacy, not sharing your documents with anyone else. It's also available for Android in a simplified form, to view documents in these formats: * Open Document Format (odt, ods, odp, odg) * Microsoft Office 2007–365 (docx, xlsx and pptx) * Microsoft Office 97–2003 (doc, xls and ppt) LibreOffice Viewer also has experimental editing features, which are not yet suited to production use. (Experimental mode can be enabled in the app settings.) The software is open source and made by a worldwide community, so if you'd like to improve the experimental editing support, please join us! Feedback and bug reports are very welcome, to help developers improve the quality of the application. You can report bugs and attach files here: https://bugs.documentfoundation.org LibreOffice Viewer is built on the same technology as LibreOffice desktop for Windows, macOS and Linux. LibreOffice Viewer is released under the Mozilla Public License v2. The software is backed by a dynamic community, represented by The Document Foundation, a not for profit entity based in Germany. LibreOffice was based on OpenOffice.org (commonly known as OpenOffice). Full credits: https://www.libreoffice.org/about-us/credits
F-Droid
LibreTranslator
APK
NOTE: App is no longer developed, source repo has been archived. Default server is down, you'll need to input an alternate server and an API key if needed. Features: * translate your text into up to 16 languages * 5 different themes * share translation easily from the app * completely open source * more coming... Supported languages (UI): * English * German * French * Polish * Portuguese (Brazil) * Russian * Turkish Supported languages (translation): This depends on the LibreTranslate instance. Translation: The LibreTranslate API is used for the translation. LibreTranslate is licensed under AGPLv3. Wiki: In the Wiki you can find a short UI explanation to get started. Licensing: Licensed under the EUPL-1.2. OpenSource: This app is open source.
F-Droid
Librera Reader
APK
Librera Reader is a highly customizable and feature-rich application for reading e-books in PDF, EPUB, MOBI, DjVu, FB2, TXT, RTF, AZW, AZW3, HTML, CBZ, CBR, DOC, DOCX, formats. With its intuitive, yet powerful, interface, Librera makes ebook reading a veritable pleasure. It even features a unique auto-scrolling, hands-free Musician's mode, with controllable speed. F-Droid version is based on the latest MuPDF and support Android 4.1+. The only difference between Librera FD (F-Droid) and Librera PRO is the absence of Google Play services and Google Drive book synchronization in Librera FD. # Just a few Librera main features: * Easy document discovery by configurable criteria: * Auto-Scan (user-specified folders) * Browse folders (using an in-app file explorer) * Recent (featuring a reading-progress indicator) * Support for bookmarks, annotations, and EPUB3 tables of contents * Configurable Day and Night modes * Configurable link color (hence, footnotes and endnotes color) * Support for many popular offline dictionaries * Vertical-scroll lock * Auto- and manual centering of documents * Custom ad-hoc CSS coding * Single-page view of two-page documents * Musician's mode with configurable scroll speed * Customizable TTS reading and built-in media player * Page-wise TTS recording to MP3 or WAV * Multi-word text search * Support for archived (.zip) documents * Support for RTL languages (Thai, Hebrew, Arabic, etc.) * Import and export of settings, auto-backup of current session * Leading initials in FB2 documents * RSVP reading (à la Spritz) * Movable bookmarks, w/ a floating indicator * And a whole bunch of other features for you to check out. You can read books in your web browser with the Librera Book Reader https://librera.mobi/online-book-reader/ The best way to fully appreciate Librera Reader, however, is to use our restriction-free Librera PRO version from Google Play. If you enjoy Librera, please consider making a donation: https://www.patreon.com/librera
F-DroidGitHub
Librery
APK
Library is a Kotlin app that helps you to keep track of the books you have read or want to read. * Search books in Google Books (without any account) * Save comments and rating in a local database * Recommend books to friends * Available in English and Italian
F-Droid
LifeDots - Diary in 8 dimensions
APK
LifeDots is for recording and analysing your life with ease in the 8 dimensions of time, event, location, notes and photo. Currently you can record any event by touching on an icon that you create, entering notes and attaching photos. Locations are automatically recorded (after you activate) in the background. Then you can browse your history, analyze statistics in charts, check the timeline of any event, and see your past geo locations. Further more, for easier viewing life from various perspectives, these analytic functionalities are interconnected: check timeline on any pieve of a piechart, review related history about a dot on the timeline, look at geographical passages related to a period of history, and go back to related history on a dot on the map. LifeDots is a free and open-source software. There is no advertising and no requirement for purchase of kind. All of your data remain on your own device. Internet connection is only needed for dynamically downloading the necessary and free map tiles when you need.
F-DroidGitHub