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POPSImageMagick A tool that can process large batches of images into a smaller size.
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POPSBookscouter free site, no registration required! see where you can sell your books for the most.
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POPSWolfram Alpha a new type of search engine - computational; meant to complement regular crawler search engines, this one is meant to compute from data sets to give you an answer to your question.
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POPSCAS Common Chemistry Designed for non-chemists who have a chemical name or CAS registry # who need more information about the chemical. Limited free service useful to public.
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POPSTwitThis make it easy for readers of your blogs or post to share it - functions similiar to the buttons that appear below such web entries providing different ways to share and post.
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POPSUrban Library Journal open-access, free, no longer offered in print, tackling current and highly relevant issues for librarians today, including offering critically needed services in today's tough economic times
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POPSERIC archive more than 192,000 documents are now freely available from the ERIC microfiche archive.
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POPSBackpack to-do, announcements, ideas, files, group online calendar, free intranet
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POPSSnooze Control your life - get free email reminders