Notes
514 open source Notes apps
Tiddloid Lite
APK
Tiddloid Lite, a lightweight version of Tiddloid, is an app to work with locally stored TiddlyWikis. Once have some ideas, you can immediately write them down and save it in a tiddler, and sync the Wiki to your other devices so that you can access these ideas anywhere.See tiddlywiki.com for more details of TiddlyWiki.Features:Create new Wikis with latest templateImport existing Wikis from file providers, supporting local and cloud.TiddlyWiki detectionSaving TiddlyWikis to the source file by clicking the Save buttonCreating shortcuts to existing wiki on desktop
GitHubIzzyOnDroid
Tinte Webcoms
APK
Webcom Reader allows you to pick webcomics from supported titles and add them to your library. Marks read, download them to read offline. List of working webcoms: * xkcd * Lunarbaboon * Cyanide & Happiness List of planned webcoms: * Dilbert * Pepper & Carrot
F-Droid
To Do
APK
A simple and intuitive To Do list based on the app bundled with Palm Pilot, plus many other features: Entirely offline, requiring few permissions to run. Permission to use external storage is only needed to back up or restore your lists. On Marshmallow (Android 6) and later, it is only requested if you write the file to a public folder. Permission to run on system boot and to post notifications is only needed to check for items which are due and that you have set an alarm for. On Marshmallow (Android 6) and later, notification permissions are only requested if you save a To Do item with an alarm. Permission to vibrate is only needed when notifying you of items which are due and that you have set an alarm for, if you have “Alarm vibrate” enabled in the app settings for Nougat (Android 7) or earlier. On Oreo (Android 8) and later, alarm vibration and sounds is managed in the system settings. Create any number of categories for different lists. Set alarms for items that are due or nearly due. Configure repeating items which advance their due date when completed. Mark items as private and optionally encrypt them with a password. Export lists to a local XML file. Import lists from either XML or a Palm Pilot data file. Backwards compatible with Android 4 (Ice Cream Sandwich) and up.
F-DroidGitHub
ToDo List Widget
APK
A simple todo list widget. Newer versions are available elsewhere, but no source code is published for those.
F-DroidGitHub
ToS;DR
APK
"I agree to the Terms and Conditions of this Website". The biggest lie of the internet. No one wants to spend an hour reading a wall of text. So we click "Accept" and move on, without knowing what we just agreed. Let's make that a thing of the past! With this app, you can search for Websites or Share an Website into it to get a Report of what is in the policies and it displays a Grade on Privacy, so you will actually know what you are agreeing on!
F-DroidGitHub
Toadua
APK
Toadua is a collaborative dictionary for the Toaq language. Look up words, vote on definitions, and create new dictionary entries from your mobile device.
F-DroidGitHub
Todo
APK
Organize Your Life with Ease Take control of your daily tasks with our sleek and secure To-Do app. Designed for offline use, this app ensures your data is always safe and encrypted.
F-DroidGitHub
Todo List (PFA)
APK
The Privacy Friendly To-Do List can be used to keep outstanding tasks in mind and organize a personal schedule. This application allows to create lists of tasks which can be individually managed. Each list contains a set of tasks. Each task can have a deadline, a reminder time and a list of subtasks. By setting a reminder time the user will be informed by a notification. It is possible to display all tasks in a calendar, to protect the app with a secret pin and to sort and prioritize tasks within a list. Colors indicate the urgency of a task (taking the deadline into account). Features of Privacy Friendly To-Do List 1. PIN protection Open the Settings menu to setup a PIN protection for your application. The PIN needs to be a number with 4 digits. You are asked for it every time you start the application / start the main view. 2. Reminder You can set a reminder to your tasks that will notify you if a deadline is approaching. Settings provide you the possibility to enable a notification sound. 3. Widget In addition, this app provides a widget that you can add to your device’s home screen. The widget presents you tasks that belong to a chosen list. Clicking on a task or its checkbox leads to the main view of Privacy Friendly To-Do List. 4. Progress by subtasks By default, progress can be chosen freely by the user when creating or editing a task. To-Do List gives the opportunity to automatically compute and show the progress of a task dependent on its done subtasks. Therefore go to Settings and enable progress by subtasks. Our Privacy Friendly App differs from other applications with respect to three aspects: 1) Minimal permissions Privacy Friendly To-Do List does not use more permissions than are strictly necessary to provide its functionality. 2) No advertisement Privacy Friendly To-Do List completely relinquishes advertisement. Many other free apps in the Google Play Store dazzle annoying advertising which also shortens battery life. 3) No tracking Privacy Friendly To-Do List does not use any trackers. Privacy Friendly To-Do List is part of the Privacy Friendly Apps group developed by the research group SECUSO at Karlsruhe Institute of Technology. More information at: https://secuso.org/pfa You can reach us via X - @SECUSOResearch https://x.com/secusoresearch Mastodon - @SECUSO_Research@bawü.social https://xn--baw-joa.social/@SECUSO_Research/ Job Offers - https://secuso.aifb.kit.edu/english/Job_Offers.php
F-DroidGitHub
TodoTree
APK
Keep your mind clear by quickly creating a nested tree of notes and tasks. Some example usages of this app are: * Creating quick notes on a given subject * Exploring complicated ideas for potential projects. * Maintain a list of tasks that have to be done * Maintain a list of long term tasks with notes. * Keep a groceries list
F-DroidGitHub
Todopad
APK
This is a todo app with local backup and restore functionality. It has many features:Write a todoEdit a todoMark todo as favouriteMark todo as completedDifferent sections for eachCreate a local backup with time and date mentionedRestore any backup from backup list on the appVery easy and accessible featuresRestore backup from a valid json file
GitHubIzzyOnDroid
Total Recall
APK
A privacy-focused, open-source photo journaling app that helps you capture and organize your memories with photos, text, and optional location data. Total Recall features a clean, intuitive interface for creating entries with: • Photo capture using modern CameraX API • Text descriptions and notes • Optional GPS location tracking (using native Android LocationManager) • Full-text search across all entries • Chronological browsing of all memories • Secure local storage with no cloud dependency Key privacy features: • All data stays on your device • No external servers or data transmission • Optional location tracking that you control • No analytics, tracking, or advertising • FOSS-compatible dependencies only Perfect for daily journaling, travel documentation, project notes, or any time you want to remember a moment with context. All dependencies are open source and F-Droid compatible, with no proprietary Google Play Services required.
F-DroidGitHub
Traductor Softcatalà
APK
Client for the Softcatalà Catalan on-line service.
F-DroidGitHub
TriliumDroid
APK
Cross-platform hierarchical note taking application with focus on building large personal knowledge bases.This is a port of the desktop application Trilium Notes. These features of the original are implemented:Synchronisation with sync server / desktop appNotes can be arranged into arbitrarily deep tree, where single notes can be placed into multiple places in the treeWYSIWYG note editor based on CKEditorFast and easy navigation between notesAutomatic note versioningNote attributes and relations for organization, querying and advanced scriptingNote encryption with per-note granularityCanvas notes powered by ExcalidrawGeo map notes powered by Leaflet using OSM dataNote map view (context-based / all notes)Scripting API to automate tasks or send notificationsIn-app user guide based on TriliumNext documentationThe following features are only available in the desktop client. They will be implemented in the app at a later time.Support for editing notes with source code, including syntax highlightingFull text searchSharing (publishing) notes to public internetRelation maps and link maps for visualizing notes and their relationsREST API for automationScales well in both usability and performance upwards of 100000 notesEvernote and Markdown import & exportWeb Clipper for easy saving of web content
GitHubIzzyOnDroid
Trime
APK
Trime is originally a frontend of open-source Android Traditional Chinese IME, based on RIME input method framework and written in Java/Kotlin with JNI. It is designed to protect the native language of various local dialects of Chinese and is a universal shape-based and phonetic-based input method platform.
F-DroidGitHub
Trollslate
APK
Trollslate transforms your text into barcode looking text. Have fun asking your friends to figure out what's written. Don't write too much slurs, it's not making it any funnier. Use the gyroscopic feature to select the roll angle if available. Dark theme is enforced but the barcode-text-page is in light theme for contrast purposes. Please consider increasing the screen's brightness if you don't see anything. Some screens work better than others but it should work fine on yours regardless
F-DroidGitHub
Trolly
APK
Trolly is a shopping list application with the aim of being a very simple app with no annoying or complicated features. It exposes intent filters to allow other apps to automatically add items to the shopping list.
F-Droid
Trudido
APK
Trudido is a privacy-friendly, open-source to-do list app built with Flutter. Organize your tasks, set reminders, and manage your daily life with a simple, intuitive interface. Trudido is designed for users who value transparency and control over their data—no ads, no tracking, and no unnecessary permissions. Features: - Add, edit, and delete tasks quickly - Organize tasks with categories and priorities - Set reminders to never miss important deadlines - Attach notes to tasks for extra details - Customizable themes including dark mode - Multilingual support for a global audience - Works offline—your data stays on your device Why Trudido? Trudido is lightweight, fast, and respects your privacy. All features are available without registration or cloud accounts. Perfect for students, professionals, and anyone who wants a reliable, distraction-free task manager. Trudido is free and open-source. Get organized and stay productive—your way!
F-DroidGitHub
Turtl
APK
Share the data for adding missing icons in an icon oack via email (or other protocols like Owncloud, NFC, Bluetooth, IM...). It just collects the app title, package name, activity name and the icon file of the apps your select. By default have set the email address for TwelF and Onze requests, but you can write another one.
F-DroidGitHub
TuxGuitar
APK
TuxGuitar is a multitrack tablature editor and player. It can open Guitar Pro and PowerTab files. With TuxGuitar, you will be able to compose music using the following features: * Tablature editor * Score Viewer * Autoscroll while playing * Note duration management * Various effects (bend, slide, vibrato, hammer-on/pull-off) * Support for triplets (5,6,7,9,10,11,12) * Repeat open, close and alternative endings * Time signature management * Tempo management Note: this version of TuxGuitar is missing google drive functionality as it depends on a proprietary library.
F-Droid
Twine
APK
Twine is a multiplatform RSS reader app built using Kotlin and Compose Multiplatform. It features an nice user interface and experience to browse through the feeds, and supports Material 3 content based dynamic theming.Features:Supports RSS & Atom feedsGorgeous home feedPin frequently visited feedsSmart fetching: Twine looks for feeds when given any website homepageReading view with shortcut to fetch full articleBookmark posts to read laterSearch postsBackground syncFeed management: Add, Edit & Pin feedsImport and exports your feeds with OPML
GitHubIzzyOnDroid
Unexpected Keyboard
APK
The main feature is that you can type more characters by swiping the keys towards the corners. This application was originally designed for programmers using Termux. Now perfect for everyday use. This application contains no ads, doesn't make any network requests and is Open Source.
F-DroidGitHub
U
UnicodePad
APK
UnicodePad lets you input every character in Unicode. And input string can be copied to the clipboard or input directly by Mushroom. You can find out where selected character is in list. By long clicking, larger character and code point will be shown. Favorite characters can be memorized. If you can't see special characters, you have to get a font such as Noto font and select it. You can download Noto fonts Google.
F-DroidGitHub
Unofficial Golem.de Reader
APK
The unofficial app for the German news site golem.de makes reading the current articles comfortable. It is optimized for all screen sizes, has functions like dark mode, deeplinks and offline articles (for premium user). And if a feature is missing, it can be implemented or requested easily due to its open source development. Information for permissions: * Network: Requirement to communicate with Golem.de
F-DroidGitHub
Unreal Tracker
APK
Displays the latest blog headlines, marketplace listings and commits of Unreal Engine 4 and Unreal Tournament development. There are a few different themes and data is refreshed when the app is reopened.
F-DroidGitHub