We unfortunately can't respond to every forum post, though if you have an urgent question you can always email us via support@lansweeper.com. In general, all emails sent to our support email address receive a reply within 24 hours during working days. Our office hours can be found
here.
Lansweeper tracks changes to software in the corresponding history table, tblSoftwarehist. It will not be possible, however, to compare reports that were already generated. You could use a 3rd party diffchecker tool for this for instance.
To get a quick overview of recent software changes you can go to Reports\Changes By Type in the web console. Software should be automatically selected, but if it's not, you can select it from the list in the left-hand pane. A built-in report also exists that you can use in an email alert, "Software: Changes in the last 7 days".