ZxApp IT is an Integrated Personal Development Environment (IPDE), Tree-Node Outline, Database, and Content Management System with a Personal Information Manager (PIM) built into it and on top of it.  Use it to track and manage anything, including notes, appointments, birthdays, anniversaries, TO-DOs, contacts, addresses, and passwords.  Define dates that repeat, receive reminders and alerts, and view the whole thing in day-view, week-view, month-view, year-view, list-view, or create your own view. You can create rich text documents and organize them hierarchically. Create a book, a web sites, or a custom database application.

ZX-VFS is an free and open source (FOSS) Java API that implements a high performance single-file virtual file system licensed under the LGPL license.  It uses its own proprietary file format to support fast random file access.  To reduce archive size, it can utilize GZip compression.  It supports password based encryption (PBE with MD5 and DES).  It is extremely easy to use, and an ideally suited storage solution for desktop-based applications (such as ZxApp IT).