Wide Angle PDF Converter - Convert PDF documents to Word, PowerPoint, Excel, JPG and other formats!
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.
Apowersoft PDF Converter - Apowersoft PDF Converter is a safe and stable PDF converter, which can quickly convert PDF to Word, PPT, Excel, JPG, PNG and many more formats.
DjVuLibre - DjVuLibre: Open Source DjVu library and viewer
AnyMP4 PDF Converter - With versatile and powerful functions, AnyMP4 PDF Converter can absolutely convert PDF format to diversified images (TIFF, JPEG, PNG, GIF, and others) and document files (Text, Word, Excel, EPUB, HTML, and more) on Mac.
Sumatra PDF - Sumatra PDF is a slim PDF/DjVu/EPUB/XPS/CHM/CBR/CBZ/MOBI viewer for Windows.