As mentioned above, the free Sentinel Software that is included (on the SD card) when you purchase the scanner...... but best to download a copy from the Sentinel link on this page to be sure you have the latest version:
Agree with guys above, however you have nothing to lose by giving ProScan a try as well. Fully functional 30-day free trial and you get streaming & remote control of the 536 in addition to programming.
For programming, settings, and database updates, I use Sentinel. But for everything else--remote control, recording, and logging--ProScan is pretty tough to beat.