Open Source

5168 apps · feature

ToberQuizz
APK
ToberQuizz presents imaginative challenges focused on international themes such as music, movies and many more. Will you be able to guess all of them? This open-source application is technologically ethical and does not contain ads, trackers, or cookies, thus fully respecting your privacy. If you liked it, do not hesitate to share it freely with whoever you want. Put your friends and family to the test! Made for you with a lot of ❤️ by Robert Mengual.
F-DroidGitHub
Todo
APK
✨ A simple, private space for your tasks and thoughts. A clean, straightforward tool for managing your daily tasks and capturing your notes, designed to stay entirely on your device. 📱 ✅ Everything in One Place Keep your life organized without switching between apps. Whether you’re checking off a quick grocery list or writing down ideas, everything is right where you need it. 📝 🛡️ Privacy First Your data never leaves your phone. With built-in biometric locking, you can keep your personal thoughts and important lists safe from prying eyes using your fingerprint or face unlock. 🔒 🔇 No Distractions No ads, no tracking, and no internet required. It’s just a reliable, fast, and quiet place to organize your life. 🎯
F-DroidGitHub
Todo Agenda
APK
Todo Agenda is home screen widgets for your Android device. It displays a list of calendar events and tasks so that you can easily have a glimpse at your due, current and upcoming appointments. Features: * No advertising. Free and Open Source. * Displays all events from your calendars and task lists. Optionally shows past events. * Automatically updates when you add/delete/modify an event. Or you may update the list instantly. * Select only the calendars you want to see in the widget. * Create several widgets, if you need. Each widget will have its own settings, including layouts, colors, filters and selected calendars. * Customize background colors and transparency of different widget parts, text's black and white shading. * Scroll through the list of events. Use "Go to Today" button to return to today instantly. * Customize the text size of the widget. * Fully resizable widget with alternative layouts. * Indicators for alerts and recurring events. * Lock time zone when travelling to different time zones. * Turn off Widget or Day headers, event icons, Days from today, etc. and see only what you need. * Android 7.0+ supported. Supports Android tablets. For the older devices please use Todo Agenda for Android 4 - 7.0 app.
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
Todosian
APK
Todosian is an Android todo app for Obsidian users. It manages todo lists stored as Markdown files inside your vault (or any folder you sync to your phone). Todosian reads and writes your existing .md files directly. There is no database import, no account, and no built-in sync. How it works - Connect a folder using Android's Storage Access Framework (SAF) - Each Markdown file becomes a category - Todos use standard Markdown checkboxes: - [ ] and - [x] Features - Add / edit / toggle / delete todos - Create / rename / delete categories (files) - Optional support for Obsidian Tasks plugin metadata (dates, priority, recurrence) - Material 3 UI, dynamic color (Android 12+) - Offline-first and privacy-focused (no analytics) Notes - Todosian modifies your Markdown files directly. Keep a reliable backup of your vault/folder. - Todosian is independent and not affiliated with Obsidian or the Obsidian Tasks plugin.
F-DroidGitHub
Toggle Headset 2
APK
This was originally designed to fix software problems in Android 1.5 that wouldn't properly route audio when the headset was plugged in and out. However many people have found it to be able to fix hardware problems too and it can be used to manually route audio to the speakers for no special reason.
F-Droid
Toggle Lineage Profiles
APK
This app allows to quickly toggle any of the system profiles of LineageOS using a widget from the home screen. It only works if you have LineageOS 14 or higher installed in your device. Tested up to LineageOS 18.0.The functionalities are:Having the widget in the home screen you know easily which profile is active at any moment.Customize the icons and colors of the profiles to be shown in the widget.Get a notification when some special profile is activated. For example, if you have a profile that disables the lock screen and it is automatically activated in some circumstances, you may want to get a notification when it is activated.Two ways of switching from one profile to another:Using a popup window that shows the list of existing profiles and lets you select the one to activate.Quick toggle from one profile to the next every time you click in the widget.Put a tile in the quick settings bar for the system profiles. Although this functionality comes already built-in in Lineage OS, some releases seem to lack it.This app is open source, with no ads and no in-app purchases, but provided with no warranty. Feel free to vote 0 starts if you want :)
GitHubIzzyOnDroid
Toki Pona Dictionary
APK
View the entire Toki Pona dictionary offline on your android device. Provides the definitions for each word and their part of speach. Small app, Less then 900KBs.Toki Pona is a minimalist conlang created by Sonja Lang in 2001. It has only 14 phonemes (sounds) and around 120 words.
IzzyOnDroid
Tokn - MFA / 2FA authenticator
APK
Tokn is a small, privacy-first 2FA / MFA authenticator. Your one-time codes stay on your device, encrypted. No accounts, no cloud sync, no analytics, no ads. A simple, open-source TOTP / HOTP authenticator for people who do not want their second factor in someone else's cloud. WHY TOKN • Private by design. No sign-up, no telemetry, and no Google Play Services on your device. • Encrypted vault. Stored in an SQLCipher database, unlocked with biometrics (fingerprint or face) or a password. • Works fully offline. Codes are generated locally on your phone. • Open source. GPL-3.0, source available on GitHub, also published on F-Droid. FEATURES • TOTP and HOTP support per RFC 6238 and RFC 4226 • SHA-1, SHA-256 and SHA-512 • Add accounts by scanning a QR code with the camera or from a gallery image • Manual entry for codes you cannot scan • Biometric unlock with password fallback • Encrypted backup and restore for moving to a new phone or keeping a copy • Device-to-device sync over local Wi-Fi, Wi-Fi Direct or animated QR code. Nothing leaves your network and the handshake is end-to-end encrypted • Organize accounts with custom groups, multiple groups per account • Custom icons and importable icon packs (Aegis-compatible) • Material 3 design with light, dark or system theme and optional Material You colors • Screenshot protection keeps codes out of the recents preview and blocks screen capture SWITCHING FROM ANOTHER 2FA APP Tokn imports backups from Aegis, 2FAS, Google Authenticator and standard otpauth:// URIs. Bring your existing accounts over in minutes. WORKS WITH Any service that supports standard TOTP or HOTP two-factor authentication. Google, GitHub, GitLab, Microsoft, Amazon, Discord, Twitch, Reddit, Dropbox, Proton, and thousands more. LICENSE Tokn is free software, released under the GNU General Public License v3.0 or later. Source code, releases and issue tracker: https://github.com/fthomys/tokn
F-DroidGitHub
Tomato
APK
Tomato is a minimalist Pomodoro timer for Android based on Material 3 Expressive. Tomato is fully free and open-source, forever. You can find the source code and report bugs or suggest features at https://github.com/nsh07/Tomato Features: - Simple, minimalist UI based on the latest Material 3 Expressive guidelines - Detailed statistics of work/study times in an easy to understand manner - Stats for the current day visible at a glance - Stats for the last week and last month shown in an easy to read, clean graph - Additional stats for last week and month showing at what time of the day you're the most productive - Customizable timer parameters - Support for Android 16 Live Updates
F-DroidGitHubIzzyOnDroid
Tomodoro
APK
Tomodoro is a modern Pomodoro technique and task management app. This application helps you manage your daily tasks and boost productivity by setting customizable work and break intervals. Key features include: - Customizable Pomodoro timer (work and break durations) - Task management with categories - Simple and modern user interface - Light and dark mode support - Local storage (no internet required)
F-DroidGitHub
TonUINO NFC Tools
APK
This app simplifies writing of NFC tags for the open source TonUINO DIY music box. More information about TonUINO can be found at https://www.voss.earth/tonuino This app will only work if the device supports NFC. It also shows the content of written TonUINO NFC tags, and allows for simple copying or changing.
F-DroidGitHub
Tonality
APK
Tonality provides a piano view, to allow to play on a simple piano keyboard. Based on a root note, different scales can be highlighted on the keyboard to ease learning of a scale. Features: * Piano view to play with * Optional key labelling * Dynamic sizing of the keyboard * Stack multiple keyboards * Scale highlighting
F-DroidGitHub
Tool Telegram
APK
This is a simple application to send messages to telegram with bot.Features:Send Message for Groups, topic groups, channels, and normal chatsChange app ThemeHow to use: How to get the bot token?to get the bot token you can create a bot at t.me/botfather and it will give you the bot token. How to get chat id?you can use t.me/raw_data_bot to get the id of the chat, group etc... How to get topic id?Normally, the topic id is in the topic link, like this link: https://t.me/robokinc/6998, in this case the topic id is 6998.
GitHubIzzyOnDroid
T
TopoSuite
APK
TopoSuite for Android is an application that targets land surveyors by helping them determining new geographical points based on measurements and offering some utilities. It is able to do the following calculations: Polar calculations: * station orientation * free station * polar survey * polar implantation * axis implantation Orthogonal calculations: * orthogonal survey * orthogonal tracking * orthogonal implantation Intersections calculations: * lines intersections * circles intersections * line / circle intersections Surface calculations: * surface included with arc of a circle * parallel limit displacement regarding compulsory surface Miscellaneous: * field / distance * point projection on a line * circle computation using three points * arc of a circle segmentation Mathematics: * triangle solver * circular elements resolution Data, such as points, can be imported into the application from CSV, LTOP or PTP file formats and exported to CSV. The history of all the calculations, the points and application settings can be exported to file (*.tpst) which can be imported into other instances of the application or simply later on.
F-DroidGitHub
Tor Browser
APK
Gecko-based browser that can also access the (Tor-)darknet.
Direct
T
Tor Browser
APKDesktop
Routes traffic through the Tor network for anonymous browsing.
Tor Browser for Android
APK
Gecko-based browser that can also access the (Tor-)darknet.
DirectGuardian Project
Tor Browser for Android (Alpha)
APK
This is the Tor Browser Alpha. This version is only for testing. Thanks for helping us test! https://community.torproject.org/user-research/become-tester/
Guardian Project
Tor VPN Beta
APK
Beta release: The VPN that fights back Tor VPN Beta puts control back in your hands when others try to cut you off from the world. This early-access release is for users who want to help shape the future of mobile privacy and can do safely. What can Tor VPN Beta do? Network-level privacy: Tor VPN hides your real IP address and location from the apps and services you use–and from anyone watching your connection. Per-app routing: You choose which apps are routed through Tor. Each app gets its own Tor circuit and exit IP, preventing network observers from connecting all of your online activity. App-level censorship resistance: When access is blocked, Tor VPN may help reconnect your essential apps to the internet. (Beta limitation: This early access version has limited anti-censorship capabilities and users may face connection issues) Built on Arti: Tor VPN uses Tor's next-generation Rust implementation. That means safer memory handling, modern code architecture, and a stronger security foundation than legacy C-Tor tools. Who is Tor VPN Beta for? Tor VPN Beta is an early-access release and not suitable for high-risk users or sensitive use-cases during the beta period. Tor VPN Beta is for early adopters who want to help shape mobile privacy and can do so safely. Users should expect bugs and report issues. If you're ready to test, bring the app to its limits, and share feedback, we'd love your help tipping the scales toward a freer internet. Important limitations (PLEASE READ) Tor VPN is not a silver bullet either: Some Android platform data can still identify your device; no VPN can fully prevent this. If you face extreme surveillance risks, we recommend against using Tor VPN Beta. Not all of Tor's anti-censorship features are implemented yet. Users in heavily censored regions might not be able to use Tor VPN Beta to connect to Tor or the internet.
F-Droid
TorServices (alpha)
APK
TorServices is a free proxy app that empowers other apps to use the internet more securely. It acts as a simple Tor "provider" for apps to hide their Internet traffic by encrypting it, then bouncing through a series of computers around the world. Tor is free software and an open network that helps you defend against a form of network surveillance that threatens personal freedom and privacy, confidential business activities and relationships, and state security known as traffic analysis. This app is a complement to Orbot, which provides the full, "batteries included" Tor utility.
F-DroidGuardian Project
Torchie
APK
Use the LED flash of the camera as a flashlight. Easy access this functionality by pressing both volume buttons together. It works in screen on, lock screen and screen off (when enabled from settings). Features: * Turn on/off torch / flashlight / LED just by holding volume Buttons / keys together * Works in screen on, lock screen, even while screen off (when enabled from Settings) * Optimized (zero) Battery usage (unless enabled in screen off via settings) * Standalone torch / flashlight / LED app too! * Easy, innovative and handy Material Design UI * Very light, tiny and small (~1 MB) * Super fast and reliable * Brightest guaranteed * Innovative, simple & handy * No privacy / security issues * No Root required * No framework / plugin required
F-DroidGitHub
Page 195