Everything you need to know to get the job.

Ghidra is a software reverse engineering (SRE) framework

Open Source Identity and Access Management For Modern Applications and Services

Open source alternative to Auth0 / Firebase Auth / AWS Cognito

Drools is a rule engine, DMN engine and complex event processing (CEP) engine for Java.

Main Liquibase Source

A library for working with Bitcoin

Downloads albums from the web in bulk for archive purposes

AI constraint solver in Java to optimize the vehicle routing problem, employee rostering, task assignment, maintenance scheduling, conference scheduling and other planning problems.

Get information about countries via a RESTful API

An easy-to-use BI server built for SQL lovers. Power data analysis in SQL and gain faster business insights.

Broadleaf Commerce CE - an eCommerce framework based on Java and Spring

Top-level domain name registry service on Google Cloud Platform

Automated testing to find logic and performance bugs in database systems

SMS gateway for Android powered phones

Provides OCR (Optical Character Recognition) services through web applications

github pull requests builder plugin for Jenkins

OptaPlanner quick starts for AI optimization: many use cases shown in many different technologies.

Bridge Home Assistant with Minecraft

Invoice plugin for Kill Bill to apply simple tax rules to invoice items.

A limited implementation of SMTP, my graduation project, test passed on Apache James and netease 126 mail server