Secunia OSI is described as 'The Secunia Online Software Inspector, or short OSI, is a fast way to scan your PC for the most common programs and vulnerabilities, thus checking if your PC has a minimum security baseline against known patched vulnerabilities' and is an app in the security & privacy category. There are more than 10 alternatives to Secunia OSI for a variety of platforms, including Windows, Linux, Web-based, Mac and BSD apps. The best Secunia OSI alternative is Patch My PC, which is free. Other great apps like Secunia OSI are Software Informer, Zero Install, Ketarin and Glarysoft Software Update.