Scraping tools

The following is a collection of tools that are known to scrape text selectable PDFs.

Listing of tools

cometdocs.com - ToS requires that you own what you upload, FWIW
pdftoexcelonline.com- ToS just requires that you respect IP rights
zamzar.com - ToS says to respect copyright
tabula.nerdpower.org - scrapes tabular data to CSV or excel
scraperwiki.com - not free, scrapes tabular data to excel
PyPDFOCR (http://virantha.com/2013/07/22/pyocr-a-python-script-for-running-free-ocr-on-your-pdfs/) - PyPDFOCR (python script that uses google's tesseract ocr api). In it's conversion process, it produces HOCR files which should be machine readable.
I will look for more here: PDF Scrapers on GitHub (nwhysel)