The Free On-line Dictionary of Computing (30 December 2018):

software audit

    A regular investigation of the software installed on
   all computers in an organisation to ensure that it is
   authorised or licensed.

   Software audits minimise the risk of prosecution for software
   theft, minimise the risk of viruses through uncontrolled
   software copying, and ensure technical support is available to
   all users.

   The Business Software Alliance Guide To Software Management
   (http://bsa.org/bsa).

   (1996-05-19)