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One source is a free "trial" version at www.pgp.com that has been available for a number of years.

It looks like I'll have to use the trial versions of each and see for myself.

They also have a trial version available for free download.

A free 15-day trial version of the program and more information are available at www.picasa.net.

There is no trial version, so research each program before you buy.

Users can download a free 30-day trial version and find more information at www.collectify.com.

I would love to test it out, is there a trial version?

You can download a free 30-day trial version of either program.

They also have a few free programs, plus trial versions of their main software.

Registration is required; the trial version will stop working after 30 days.