ZXing ("Zebra Crossing") barcode scanning library for Java, Android

Open Source Identity and Access Management For Modern Applications and Services

a fast, scalable, multi-language and extensible build system

Jenkins automation server

FizzBuzz Enterprise Edition is a no-nonsense implementation of FizzBuzz made by serious businessmen for serious business purposes.

Server supporting the Signal Private Messenger applications on Android, Desktop, and iOS

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

signal-cli provides an unofficial commandline, JSON-RPC and dbus interface for the Signal messenger.

Track and evaluate the performance of your investment portfolio across stocks, cryptocurrencies, and other assets.

Termux add-on app which exposes device functionality as API to command line programs.

Lightning fast, open-source, < 250kb Android launcher

Android (f/w 2.1+) on screen keyboard for multiple languages.

An unofficial open source Android app for Reddit.

An Android helper class to manage database creation and version management using an application's raw asset files

Internet search engine for text-oriented websites. Indexing the small, old and weird web.

Generative Agents for video games. Based on Generative Agents: Interactive Simulacra of Human Behavior

configurable OSM offline router with elevation awareness, Java + Android

Recording of house numbers for OpenStreetMap

My solutions for coding challenges