PDF embedder is main plugin for displaying PDF documents on go in site, premium version has feature to "download viewed version" and "scroll on go" (you dont have to click next page) are very usefull
Advanced Access Manager is very nice plugin when you can manage your site roles, premium version has feature to restrict specific page deletion (very good when you have unskilled moderator)
Advanced Access Manager is very nice plugin when you can manage your site roles, premium version has feature to restrict specific page deletion (very good when you have unskilled moderator)