Examples of 3rd party scanning applications:
- Microsoft Paint
- Microsoft Windows Fax and Scan
- Adobe Acrobat
- Photoshop
Most imaging applications will have some kind of import feature on them that will allow you to create a new document from the scanner. However, only products licensed by Adobe will be able to create a PDF from scratch. Everything else will have to create a .TIFF and then a free conversion tool to convert it over to .PDF.