Some PDF converters that will be of great help to student in their final year to compile their project report to PDF,
1. The easiest and and simplest is to add "Microsoft save as PDF or XPS" add-in to MS office. By installing this, an icon "PDF or XPS" will be added in the "Save As" menu with which you can easily save any MS Office document (word, excel, powerpoint,..)
2. PrimoPDF which is added to the Printer list. With this you can print any file(text, image, web page, eTicket, CAD drawings,...) to PDF. For complete solution you can prefer to buy NitroPDF with security and password protect features.3. Free PDF Solutions provides a list of free softwares for your specific needs. (FREE PDF to JPG Converter, PDF to WORD Converter, PDF to HTML Converter, JPG to PDF , Converter, PDF Unlocker Converter, PDFMerge, Convert XPS to PDF Converter, PDF to Excel Converter, Scan to PDF, Word to PDF Converterk, PDF to DOC Converter)
There are still more softwares available, but the above mentioned are the best free softwares available.