About Computerized Inventory Systems Specialists Ltd: Our Products have been under development since 1994, and since CISS has become specialized in Inventory Management Software. CISS initially specialized in custom solutions and then developed enough of a base product to release a generic solution. The first release of Inventory Pro for Windows occurred in 1998, Later followed by Invetory Pro Online ( IPOL ). For those customers for whom our software is not a perfect fit we have also offered customized solutions.