Sumatra PDF
RodneyEberly
On our website at work, we dynamically generate PDFs. This requires lots of testing on our local pcs. Adobe Reader is good for viewing the pdf, however, it also places a lock on the file, so that nothing else can access it. So if you make changes to the pdf generation code and want to retest, you have to make sure that you have closed that file in Adobe Reader, otherwise, the code generating the PDF will throw an error.
A great alternative to Adobe Reader is Sumatra PDF. http://blog.kowalczyk.info/software/sumatrapdf/index.html
It is a small open-source PDF viewer for Windows. It may not have all the features of Adobe Reader, but it is fast, and best of all it does not lock the file. So you can keep the file open in Sumatra, even when modifying the pdf from another source, and Sumatra will automatically refresh the view with the latest version.
