This document introduces Joeffice, a new open source office suite built using Java. It aims to provide a customizable, modular alternative to existing proprietary office suites like Microsoft Office and Google Docs. Joeffice will allow opening multiple documents simultaneously, include plug-in capabilities for additional features, and work both online and offline without cloud lock-in. The goal is to develop an initial alpha version within 30 days by one developer, leveraging existing Java libraries.