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Pdf.to - Convert PDF to Word, Excel, JPG, & from. Also compress PDF
Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
KDAN Mobile PDF Reader - PDF Reader is the one app you can rely on when you need a portable solution to work with PDFs.
Bootstrap Table - Bootstrap Table has been designed to reduce development time and to require no specific knowledge from developers.
PDFShift - Convert any HTML documents to high-fidelity PDF using a single POST request