Works well - but free version limited to 10 pages
This works quite well. I used it on a paper that include chemical formulae, and it did have trouble with the subscripts. It put section breaks in, and used small font, instead of using a subscript. However, for something that is essentially OCR, the result was not at all bad. The biggest drawback I found was with the 10 page limit on the free version. Luckily, the paid version is only $8.99.
chcurtis about PDF WordSmith Free - Convert PDF to Word