Yes. Find It EZ uses .NET native database connections and supports searching cloud database Microsoft SQL Azure, all Amazon RDS databases, as well as support for multi-platform DBMS' such as Oracle®, DB2® LUW and MySQL® that run on Linux and other non-Windows operating systems.
When it comes to file-based searches, Find It EZ supports searching through any network share. As such, although native support to search Linux file systems is not built in, you can define and access supported files ( .rpt, .c, .html, .txt, etc. ) using Samba network shares for example.