Can I try 0patch before buying it?

Of course. For a basic functional and compatibility test, you can create a free 0patch account at https://central.0patch.com, install some 0patch Agents (download link) and register them to your 0patch account. With such "0patch FREE" setup you will be able to see whether 0patch Agent coexists well with your other software. You won't have all the micropatches, but you'll have enough to test micropatching using these instructions.

We recommend any organization considering 0patch to do the above for initial compatibility testing.

To try 0patch PRO (all patches) or 0patch Enterprise (all patches, plus enterprise features like central management), login to 0patch Central and click the trial offer at the top of the page. The trial license will be downloaded to your 0patch Agent upon its next sync (occurring automatically every 60 minutes).