System Package and Update History Viewer

System Package and Update History Viewer is a desktop package inventory and update
timeline inspector for Debian and Ubuntu systems. An independent Linux alternative
inspired by WinUpdatesList, dpkg-query, and APT log viewers, it reads the live host
package database and rotated package manager logs to catalog installed software,
dependencies, disk usage by section, and chronological update history.

Key Features:
- Installed Package Catalog (/var/lib/dpkg/status): Lists all installed Debian and
Ubuntu packages with version strings, architectures, installed byte sizes, archive
sections, priorities, maintainers, configuration files, and full descriptions.
- Dependency & Reverse-Dependency Resolver: Parses Depends, Pre-Depends, Recommends,
and Suggests fields and maps reverse dependencies across the installed package set.
- Chronological dpkg & APT Update Timeline: Reads /var/log/dpkg.log* and
/var/log/apt/history.log* (including gzip-compressed rotated archives) to display
timestamped install, upgrade, remove, and purge events alongside APT command lines.
- Section Disk-Usage Analytics & Export: Renders a visual breakdown of disk space
by archive section and exports package inventories and update logs to CSV and JSON.

Disclaimer: This project is an independent open-source tool and is not affiliated with, sponsored by, or endorsed by NirSoft.