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The creative software industry has declared war on Adobe
(www.theverge.com)
This is a most excellent place for technology news and articles.
I have. But it's not a replacement for what I use Acrobat, regrettably. I think it'll get there eventually, though.
Adding images, adding text (not editing existing text), resorting pages, extracting pages, adding and deleting pages, and signing (less important).