Notes
514 open source Notes apps
JekyllEx
APK
JekyllEx is a powerful IDE designed specifically for Jekyll projects. Build, preview, and publish your Jekyll based websites right from your device. GitHub Pages environment with Ruby and default gems embedded natively. Built-in Git for version control. Easily connect to your GitHub account. Powerful terminal UI with multiple sessions support. Desktop level experience. Create new sites locally / import existing ones from a remote source. Easy file / folder management. Create, download from url or load from storage. Built-in code editor with syntax highlighting. Custom themes available. Live previews for running jekyll server with automatic reloading. Preview the site offline in any browser right on device before publishing. Secure by default. No third party backend. Everything stays offline. Make quick edits to your Jekyll site on the go in a mobile-friendly interface. Visit the project website for more information and documentation.
F-DroidGitHub
JellyBook
APK
JellyBook is a book and comic reading app for Jellyfin. Its a app thats meant to allow you to read your files from Jellyfin on mobile. Supported file formats include:.cbr & .rar: cbr (Comic Book aRchive) is a proprietary file format so is not necessarily encouraged..cbz & .zip: another Comic book format.pdf: the Portable Document Format as you know it.epub: Electronic PUBlication is a wide-spread eBook formatMore formats will be added over time.
GitHubIzzyOnDroid
Jiyi
APK
Jiyi is a cross-platform encrypted voice note application. Protect Your Privacy: In today's world where cloud services are increasingly prevalent, privacy has become a black box. All features of Jiyi run locally to fully protect your privacy. Hear Past Selves: In the hustle and bustle of life, writing a diary seems like a luxury. Open your phone and record a short voice note to capture the present moment. Visualize Your Journey: Explore the world and leave behind voice notes in different corners! Jiyi supports recording the location at the time of recording, helping you visualize your travels.
F-DroidGitHub
Joplin
APK
Note: This release can lag significantly behind the official release which can be an issue when a timely update is needed. It may be less secure because the app might have a known security vulnerability for several days, even if the official app has been patched. It does not have camera capabilities nor location functions. Issues with this version might be raised on https://gitlab.com/fdroid/fdroiddata for user @muelli Joplin is a note taking and to-do application, which can handle a large number of notes organised into notebooks. The notes are searchable, can be copied, tagged and modified either from the applications directly or from your own text editor. The notes are in Markdown format. Notes exported from Evernote and other applications can be imported into Joplin, including the formatted content (which is converted to Markdown), resources (images, attachments, etc.) and complete metadata (geolocation, updated time, created time, etc.). Plain Markdown files can also be imported. The notes can be securely synchronised using end-to-end encryption with various cloud services including Nextcloud, Dropbox, OneDrive and Joplin Cloud. Full text search is available on all platforms to quickly find the information you need. The app can be customised using plugins and themes, and you can also easily create your own. The application is available for Windows, Linux, macOS, Android and iOS. A Web Clipper, to save web pages and screenshots from your browser, is also available for Firefox and Chrome.
F-DroidGitHub
Jotter
APK
Jotter is a simple, privacy-friendly notes app that's free, beautiful, and yours. Quickly jot, edit, and organize thoughts without ads, tracking, or clutter—all stored safely on your device.
GitHubIzzyOnDroid
Journalize
APK
Features Renders in Markdown (images included) Automatic pseudo-Markdown rendering Automatically generates the next starting character in lists Import, export, and share Supports geo-stamping of entries Custom tags for the entries Browse entries Search entries based on content and tags Quickly open previous entry Automatically open new entry after reopening app after custom duration Black and White mode, both in greyscale
F-DroidGitHub
KFZ-Kennzeichen
APK
Simple app to tell by a car's number plate where the car is registered. If you're using Android's TalkBack functionality, a connection to Google servers will be established.
F-Droid
KOReader
APK
An e-book reader app for Android devices, optimized for reading e-books and documents in various formats, including PDF and EPUB.
F-DroidGitHub
Kahon
APK
Features - Ignore extension-specific rate limits (makes page loading, downloading, and browsing faster). - Increase max number of concurrent downloads. - Trust all extensions by default. - Disable caching for library updates. - Remove Google proprietary/privacy-unfriendly blobs (Firebase/Crashlytics).
F-DroidGitHub
Karui ToDo
APK
An open source, privacy focussed, todo list app to quickly jot down things to do. Inspired by the system-24 theme and the Windows Mobile design system, this app's design is set to evolve into something even more eye-catching. Features - Simple note taking and list making: Includes an undo delete feature. - Retro terminalesque design: Inspired by Unix customizations found online. - Lightweight: Consumes only 0.05% CPU and 128KB of RAM. After all, simple apps shouldn't need more—remember, the Apollo mission operated on a computer with around 4KB of RAM! - Highly customizable: Offers many themes with option for custom fonts. - To add a new note tab: use the `///TabName` format. - To remove any tab (except the Main tab): use the `\\\TabName` format. - Or just long-press any tab to rename, delete or add new tab. For more details on features, usage, customizations, discussions, visit the github repo and telegram group.
F-DroidGitHubIzzyOnDroid
Keyboard Switcher
APK
Keyboard Switcher is a keyboard selection application, it allows to switch easily from the current keyboard to another in several ways, thanks to a discreet floating button available on the screen, a shortcut, a tile, or a notification. This application makes it easy to switch keyboard if you do not have an effective way integrated into the operating system and the keyboard of your device. Note that in Lollipop and later versions of Android, a long press on the space bar of your keyboard can make it easy to change. System-managed notifications also allow this change. In these cases, the application may be superfluous. Keyboard Switcher is opensource and ad-free, it survives thanks to your contributions and donations. Any issue : https://gitlab.com/kunzisoft/Android-KeyboardSwitcher/issues
F-Droid
Khushu
APK
Khushu is a private Muslim app built to support worship without ads, trackers, or subscriptions. It brings together prayer times, guided prayer, tasbih, Quran, hadith, and focused study tools in one calm, modern experience. What Khushu offers Home screen with prayer times, current prayer state, sun progress, and Islamic month events Guided prayer flow for users who want a clean rakat-by-rakat companion Tasbih collections with immersive counters and customizable bead styles Quran reading with Arabic text, translations, tafsir catalogs, and audio support Hadith and study sections designed for quiet reading and reflection Prayer notifications, pre-prayer reminders, and optional extra timings like sunrise and midnight Built with care No ads No analytics No account required Local-first design where possible Focused visual design for worship instead of social noise Khushu is still early, but the intention is clear: make a beautiful, respectful tool that helps Muslims return to prayer, dhikr, and study with more presence.
F-DroidGitHubIzzyOnDroid
Kinoko[Manga Reader]
APK
Load the online comic content supported by any plug-in project to provide a convenient online comic viewing experience. ### Features: * Plug-in support, using git to manage plug-ins, you can use the plug-ins provided by developers to browse the corresponding network resources, or enter any git address to load the plug-in. * Collections, Add to favorites, easy and quick viewing at any time. * Download manga, download to local, and browse at any time without internet. * Volume keys can be used to turn pages, which can be easily turned with one hand. * Multiple browsing modes, turning pages horizontally or vertically.
F-DroidGitHub
Kitsune
APK
Kitsune is an unofficial android app for Kitsu.app (Kitsu.io). It allows you to browse anime & manga and track your progress. Features: * Explore and search anime and manga, even without an account * View anime and manga details including episodes/chapters and characters * Manage your anime & manga library * Update your Kitsu profile and account settings * Material 3 Design * Home screen widget
F-DroidGitHub
Kiwix
APK
Kiwix lets you read Wikipedia and other websites without an Internet connection. It uses the highly compressed ZIM format to store webpages for quick and easy reading.The app is a lightweight piece of software reading bigger files stored on your device or SD card: once it is installed, you can select which additional content you would like to download (Wikipedia, Wiktionary, TED talks, etc.) and be ready for when your internet connection is bad (or need to be in airplane mode)!Note: Kiwix is also available on regular computers (Windows, Mac, Linux).
GitHubIzzyOnDroid
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