SOLUTION
As of version 2.5.919, the manage systems and manage accounts listing tabs now have adjustable column widths and the column width can be saved as default filter settings. To use this feature, please upgrade to 2.5.919 or later.
WORKAROUND
For older versions:
1. Login to /tpam for 2.5 or /par for 2.4
2. Browse | Systems, Accounts, & Collections
3. Select Manage Accounts | List Accounts
4. Export the list to CSV or EXCEL