The db4o Object Manager is a GUI tool and API to browse and query the contents of any db4o database file. Object Manager currently provides the following features:
-Powerful ad-hoc queries
-Efficient handling of large data sets
-Table view for quick scrolling through large data sets
-Tree view for drilling down through an object graph
-Access to internal database information including stored classes, data size and indexes
-Management functions including Backup and Defragment