title_body: Are there any ebook readers that do not have web browsers
upvoted_answer: Yes, there are many, both software only and hardware ebook readers that don't include web browsing especially older models. 
  For many hardware ebook readers 
  it doesn't make sense to have a webbrowser because they have no touch screen and no virtual keyboard, making it impossible to specify a URL. Most of these devices have no way to connect to the internet that would be a requirement for webbrowsing. (E.g. the older (2007) sony devices).
  
  For software ebook readers it often doesn't make much sense to try and compete with real webbrowsers, they are better of focussing on enhancing ebook related HTML display functionality.
  
  Before the kindle formats and ePub there were other formats that were not HTML/XHTML based, such as PDF (but there were a few other with a more efficient format than either of those as well) and readers for those ebooks don't have a HTML rendering engine built in, and web browsing would not be a natural extension to that kind of renering engine at all.