What's 'Installed' on your Mac?

Install.log file has an immense value to see all the installations on you Mac. 
Use this command on your terminal to get the list: 
​
grep 'Installed' /private/var/log/install.log
This log file has an immense forensic value to identify the user installation activity. Questions like remotely installed applications, failed installation can be answered by analyzing the  'Install.log' file.
cat /private/var/log/install.log