Encrypt PDF (Secure PDF)
This software provides encryption for PDF documents with options of using 40-bit or 128-bit encryption supported by Acrobat Reader version 5.0 onwards.
VeryPDF Inc. 
Encrypt PDF Command Line
This software enables encryption (using 40-bit or 128-bit standard supported by Acrobat Reader 5.0 or above) of pre-existing PDF documents.
PDFcamp Pro Printer(pdf writer)
PDFcamp and PDFcamp Pro are user-friendly software that converts Windows applications into PDF files. They can produce PDFs from printable applications without requiring Adobe Acrobat.
PDF Extract TIFF (Convert PDF to TIFF)
This software can extract images from PDF files and save them as TIFF images. It also supports high compression ratios for the generated TIFF images.
Print To Image
Print-To-Image Conversion Driver is a software that converts various files into raster image files. It's quick and easy to use for documents, spreadsheets, web pages, and more.
PDF2TXT(PDF to Text)
PDF2TXT is a reliable software that swiftly and accurately converts PDF documents to text format. It offers a free trial and doesn't require Acrobat software. With high-speed performance and batch conversion support, PDF2TXT also preserves page layout during the conversion process.
PDFcamp Printer(pdf writer)
PDFcamp and PDFcamp Pro are user-friendly tools that enable the creation of PDF files from Windows applications. They can convert any printable application to PDF, without requiring Adobe Acrobat.
Image To PDF(PDF E-Book Maker)
Image to PDF is a free software that converts JPEG, TIFF, JPG, TIF, PNG, PCX, GIF files directly to PDF without the need for Adobe Acrobat software. Download now and easily convert all your image files to PDF.