Academic Presenter is a free software that combines capabilities of slide-based products with a dynamic canvas (like Prezi)
Converts images into one pdf document for viewing all of them at once
PDF Compressor is a must-have for people with large amounts of PDF files that need compressing to maximize space.
Versatile and easy to use screen grabber
Displays PDF files for easy perusal and printing
Freeware that converts JPEG images to PDFs
Scan and organize your documents in PDF format