KDAN Mobile PDF Reader - PDF Reader is the one app you can rely on when you need a portable solution to work with PDFs.
Pdf.to - Convert PDF to Word, Excel, JPG, & from. Also compress PDF
Jotform PDF Editor - Automatically create polished, designed documents
RatherListen - Convert URLs, PDFs, & photos to clear spoken audio
Anvil PDF Filling API - The easiest way to programmatically populate any PDF
Bitwar Online PDF Converter - One-click to Interconvert PDF to Word, Excel, PPT, PNG, TXT, HTML, etc., batch mode supported!