PDFTK Builder - PDFTK Builder is a free graphical interface to for PDFTK, making it much easier to use.
JPEG to PDF - JPEG to PDF is a free program that can convert image files to PDFs.
PDF Arranger - Small python-gtk application, which helps the user to merge or split pdf documents and rotate, crop...
JPG 2 PDF.ru - Combine multiple JPG images into one PDF file
Debenu PDF Tools - Simple to use solution to merge PDF files, edit document properties, add and edit custom metadata, convert images to PDF, convert PDF to text and much more.
Convert-JPG-to-PDF.net - Convert JPG to PDF for free with this online service.