Download of PEX unknown was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. We recommend checking the downloaded files with any free antivirus. This program is a product of Apollo Art.
From the developer:
PEX is the leading corporate card management solution for tracking and simplifying employee expenditure. It is the only vertically-integrated platform that has been developed from its root to streamline expense management, grant funds for programs and the disbursement of related funds.
You may want to check out more software, such as Z3-2.6, which might be similar to PEX.