You can download a free evaluation at
www.ezaudit.net/addons/ondemand
Once installed, you launch it from the E-Z Audit Admin console
via the Tools & Add-ons tab:

Click for larger image
You do not need this add-on to do automatic audits of your PCs. E-Z
Audit 'core' product will do that for you.
What this add-on provides
is the ability to scan or re-scan machines any time you want.
- Ideal
for tech desk use if you normally audit every 60 days, but someone needs a
new audit right now to troubleshoot a PC.
- Also ideal if you
never want to run audits on a schedule, but only as needed.
How On Demand works - The
Basics:
The On-Demand add-on must load to each PC which happens when the user logs onto the network. Nothing is installed to the PC itself.
Once logged on, that PC remains available for On-Demand auditing until
logged off or shut down.
If you have followed all the steps to deploy On-Demand to your
LAN as below as well as deployed the actual Scanner Modules for the core E-Z Audit
product as per the
Quick Start Guide
,
you are ready to get audits On Demand.
Again, remember that the On-Demand "listener" only is loaded after each PC has
booted and logged into your network after you have deployed the modules to
your server.
If you need help troubleshooting the
scanner portion (which with On Demand is still what does the actual
audit), please read our troubleshooter in the Quick Start Guide, which contains the most frequent issues and
questions encountered by new users.
Set up On-Demand
Read the E-Z Audit On-Demand User's Guide

To use E-Z Audit On Demand
exclusively
If you prefer to only scan using On-Demand and not use E-Z Audit's scheduled
scanning, simply delete (or omit) the usual command line to launch the E-Z
Audit scan from your logon script and instead only use the On
Demand command line.