The "AOSTSoft Excel to PDF Converter for Windows" is a software tool designed to convert data from Microsoft Excel spreadsheets to PDF format. It can be used to create, edit, and manage PDF files, including the ability to extract data from Excel sheets and export it as a PDF.

If you are looking for a freeware alternative, you might consider using Google Sheets or LibreOffice Calc, which both have built-in features for exporting data as PDFs. Alternatively, there are several third-party tools available that can perform similar conversions, such as Adobe Acrobat, Foxit Reader, and Nitro Pro.

If you need a specific version of this software, please provide more information about your requirements or the exact name of the software you are referring to.