You can download the trial version here: http://tds.diamondcs.com.au/index.php?page=download Quotes from that page: The evaluation version of TDS is time-limited to 30 days and missing some features. If you find the demo useful or wish to use TDS beyond 30 days, please register - it's fast, easy, and very affordable. - end quotes - Some differences when comparing the trial version with the registered version: (this is not a complete list) 1. "Execution protection" is not available in the demo. 2. You have to download the definitions (Radius-file) manually and then restart TDS-3. For info about manually downloading, see : TDS3 - Daily Update Information sources 3. The trial-version gives you this warning: "WARNING: Your Radius.TD3 database needs to be updated". Even if you have manually downloaded the latest Radius-file, you will see that message. 4. You don't have access to the private forum at the DiamondCS site.