iPaper
Since the trend that everything starts with "i" these days. Please let me introduce to you what I think is a PDF killer, which is called Ipaper. iPaper to Alternatives Feature iPaper PDF Microsoft Office Requires Download No Sometimes Yes Requires software installation No Yes Yes Embeddable in web pages Yes No No Cost to create documents Free $299 ~$150 Offers built-in social features Yes No No Size of application 96 KB 92,000 KB ~130,000 KB Option to advertise in documents Yes No No Highly secure? Yes Only with DRM No Can contain viruses? No Yes Yes I still do not know , how friendly it is for Search Engine, or Does it support any kind of access right or encryption, I still have no clue. But I do not ...