SpaceObServer is a hard disk space manager for Windows. It scans directory trees using a background service, and stores their structure, sizes and properties in an SQL database. In a client application the collected data can be viewed and browsed in hierarchical or tabular views, 3D bar, pie and line charts. Using the archived data you are able to track the development of the space usage from past to present. A flexible file search with many predefined searches allows filtering and listing files directly from the database.