Accepting PDFs, Word documents, text files, spreadsheets, and PowerPoint presentations, DocStoc (docstoc.com) has a wide variety of business related documents from reputable sources such as Legal Zoom as well as original pieces. Most of these are available free of charge, but premium documents can either be purchased or a monthly subscription can be bought for $10 to $20 a month.
Scribd (scribd.com) has a partnership with Facebook that allows its users to read their friends’ documents, make reading suggestions, and even access their free Scribd account with their Facebook login.
Focusing mainly on the social media aspect of document sharing, DocShare (docshare.com), also free, aims to create a community right on the website. It features an extensive profile for its users and feature updates and recent activity on the homepage.
DoXtop (doxtop.com) allows you to include Flash and audio in your documents. It also features ways to include discussions, chats, surveys and even blogging. You are not simply publishing. You are also distributing and marketing as well, and it is all at no cost.
Docuter (docuter.com) offers pricing packages ranging from $10 to $90 and even has an Enterprise package with an unlimited amount of storage space, customized branding and a personalized domain. Other features include but are not limited to external client accounts, project management tools, and daily offsite data backups.