All Algorithms implemented in Java
Termux - a terminal emulator application for Android OS extendible by variety of packages.
Jenkins automation server
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
Apache RocketMQ is a cloud native messaging and streaming platform, making it simple to build event-driven applications.
Distributed SQL transaction & query engine for data sharding, scaling, encryption, and more - on any database.
A Java 8+ Jar & Android APK Reverse Engineering Suite (Decompiler, Editor, Debugger & More)
QuestDB is an open source time-series database for fast ingest and SQL queries
Open source alternative to Auth0 / Firebase Auth / AWS Cognito
Java JWT: JSON Web Token for Java and Android
The most widely used, high performance Minecraft server that aims to fix gameplay and mechanics inconsistencies
Views and Drawable for displaying animated GIFs on Android
Open-Source Web UI for Apache Kafka Management
Testcontainers is a Java library that supports JUnit tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container.
Free and open log management