Organic Maps is a free Android & iOS offline maps app for travelers, tourists, hikers, drivers and cyclists based on OpenStreetMap data created by the community. It is a privacy-focused, open-source fork of Maps.me app (previously known as MapsWithMe), maintained by the same people who created MapsWithMe in 2011.
Organic Maps is one of the few applications nowadays that supports 100% of features without an active Internet connection. Install Organic Maps, download maps, throw away your SIM card, and go for a weeklong trip on a single battery charge without any byte sent to the network.
It looks like there is also a desktop version.
The next iteration of Syncthing for Android. Available in the F-Droid repository. Tries to be a drop-in replacement for Syncthing.
Folder, device and overall sync progress can easily be read off the UI. "Syncthing Camera" - an optional feature where you can take pictures on two phones into one shared and private Syncthing folder. No cloud involved. (deprecated) "Sync every hour" to save even more battery. Individual sync conditions can be applied per device and per folder (for expert users). Changes to folder and device config can be made regardless if syncthing is running or not. UI explains why syncthing is running or not. Supports two-way synchronization on external sd cards since Android 11. Supports encrypted folders on untrusted devices.
Has migration instructions for the original Syncthing.
ProofMode is an open-source project developed by Guardian Project, Okthanks and WITNESS.
We believe in a future, where every camera will have a “Proof Mode” that can be enabled and every viewer an ability to verify-then-trust what they are seeing. ProofMode is a system that enables authentication and verification of multimedia content, particularly captured on a smartphone, from point of capture at the source to viewing by a recipient. It utilizes enhanced sensor-driven metadata, hardware fingerprinting, cryptographic signing, and third-party notaries to enable a pseudonymous, decentralized approach to the need for chain-of-custody and “proof” by both activists and everyday people alike.
An ethically sourced, opt-in only data collection project. Published information is obfuscated to protect transmitters and contributors. Updating existing data requires information only available in physical range of a beacon. Multiple mobile apps for feeding the system can be found on the F-Droid repository.
Git repo: https://codeberg.org/beacondb/beacondb
Dicio is a free and open source voice assistant running on Android. It supports many different skills and input/output methods, and it provides both speech and graphical feedback to a question. It uses Vosk for speech to text. It has multilanguage support, and is currently available in these languages: English, French, German, Greek, Italian, Russian, Slovenian and Spanish.
Available on F-Droid, Google Play, and as an .apk file from Github.
A group of simple, open source apps without ads and unnecessary permissions, with customizable colors. A fork of @SimpleMobileTools.
Toybox combines many common Linux command line utilities together into a single BSD-licensed executable. It's simple, small, fast, and reasonably standards-compliant (POSIX-2008 and LSB 4.1).
Toybox's main goal is to make Android self-hosting by improving Android's command line utilities so it can build an installable Android Open Source Project image entirely from source under a stock Android system. After a talk at the 2013 Embedded Linux Conference explaining this plan (outline, video), Google merged toybox into AOSP and began shipping toybox in Android Marshmallow in 2015.
Toybox aims to provide one quarter of a theoretical "minimal native development environment", which is the simplest Linux system capable of rebuilding itself from source code and then building Linux From Scratch and the Android Open Source Project under the result. In theory, this should only require four packages: 1) a set of posix-ish command line utilities, 2) a compiler[1], 3) a C library, and 4) a kernel. This provides a reproducible and auditable base system, which with the addition of a few convienciences (vi, top, shell command line history...) can provide a usable interactive experience rather than just a headless build server.
An Android app for interfacing with WeeWX remotely. In the Android store. Requires the installation of the "Inigo" addon from the same Github repository.
Not a Linux virtual machine, but an Android terminal emulator and Linux environment that works directly with no rooting or setup required. A minimal base system is installed automatically - additional packages are available using the APT package manager.
In both the Google Play and F-Droid stores.
Cross-platform GUI written in Rust using ADB to debloat non-rooted android devices. Improve your privacy, the security and battery life of your device.
Packages are as well documented as possible in order to provide a better understanding of what you can delete or not. The worst issue that could happen is removing an essential system package needed during boot causing then an unfortunate bootloop. After about 5 failed system boots, the phone will automatically reboot in recovery mode, and you'll have to perform a FACTORY RESET. Make a backup first!
In any case, you CANNOT brick your device with this software! That's the main point, right?
A site where you can search on Samsung devices and build custom Android firmware that gives you root access if it's in there.
Heimdall is a cross-platform open-source tool suite used to flash firmware (aka ROMs) onto Samsung mobile devices. Heimdall connects to a mobile device over USB and interact with software running on device known as Loke. Loke and Heimdall communicate via the custom Samsung-developed protocol sometimes referred to as the 'Odin protocol'. Low-level USB in Heimdall is handled by the popular open-source USB library, libusb.
ToneDef is a small, but powerful tone dialer application for Android featuring DTMF, blue box, and red box tone generation. Use the keypad, enter a predefined sequence, or select an entry from your contact list. F-Droid is currently the recommended way to install ToneDef.
A few years ago I noticed that most of the unit converters on the digital stores were ugly, not immediately usable, with ads and tracking software. I thought it would be a good idea to develop Converter NOW in order to solve all these problems!
It is made to be easy, fast and immediately useable: just start typing and immediately you have the real-time conversion with all the other units of measurement. It is customizable: the units can be reorganized according to your priorities and your use case. It integrates a Calculator that let you do the calculations in every page.
Currency conversions are updated daily. Choose your favourite dark or light theme. Full Smartphone, Tablet and Web app support. It is free, no ads, no analytics, no permissions (just Internet to update currency conversions). And first of all it is open source!
Online demo site: https://converter-now.web.app/
PiRogue tool suite (PTS) is an open-source tool suite that provides a comprehensive mobile forensic and network traffic analysis platform targeting mobile devices both Android and iOS, internet of things devices (devices that are connected to the user mobile apps), and in general any device using wi-fi to connect to the Internet.
This post will detail the steps involved to configure an Android device to audit the traffic of any app installed on it, requiring no other device to be physically present. The device will have to be rooted in order to install the software required for this setup. All of the software required in this post is free of cost and open-source, not requiring an extra penny of investment above and beyond that of the device itself. The end result will allow the user to open an app in a specialized way that allows the traffic to be logged, without attaching extraneous devices or requiring the device to be connected to any specific network or access point.
UnifiedPush is a set of specifications and tools that lets the user choose how push notifications* are delivered. All in a free and open source way.
TL;DR I JUST WANT TO KNOW WHAT TO INSTALL: ntfy (Android)
The app periodically scans your surroundings for potential tracking devices, like AirTags or other Find My devices.
The AirTags and other Find My devices are simple, small and perfect to track Android users! Without tracking warnings, as integrated on iOS, anyone could try to track your behavior by placing an AirTag in your jacket, backpack or car.
With the app you can play a sound on AirTags and find it easily. Afterward, you can view at which locations the device has tracked you. For this we use background location access. All location data never leaves your device
If you no one is trying to track you, the app will never bother you.
Mobile Verification Toolkit (MVT) is a collection of utilities to simplify and automate the process of gathering forensic traces helpful to identify a potential compromise of Android and iOS devices.
It has been developed and released by the Amnesty International Security Lab in July 2021 in the context of the Pegasus project along with a technical forensic methodology and forensic evidences.
Warning: this tool has been released as a forensic tool for a technical audience. Using it requires some technical skills such as understanding basics of forensic analysis and using command line tools.
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.
Can create a new local wiki with the latest template. Can import existing Tiddlywikis.