Do we have a good definition for "web application"?


3 Answers 3


Here's the definition for Application software from Wikipedia

Application software, also known as an application, is computer software designed to help the user to perform singular or multiple related specific tasks. Examples include enterprise software, accounting software, office suites, graphics software and media players.

Application software is contrasted with system software and middleware, which manage and integrate a computer's capabilities, but typically do not directly apply them in the performance of tasks that benefit the user. A simple, if imperfect analogy in the world of hardware would be the relationship of an electric light bulb (an application) to an electric power generation plant (a system). The power plant merely generates electricity, not itself of any real use until harnessed to an application like the electric light that performs a service that benefits the user.

So I'd say a Web application is any website that allows a user to accomplish specific tasks. A website that is not a Web application is a website meant to give the user information (blogs, news, tutorials, etc.).

  • That same wikipedia page lists "file viewer" as an example of application software, and says that application software "contrasts with system software, which is mainly involved with running the computer." which would seem to include pretty much any website at all.
    – Him
    Commented Nov 13, 2019 at 16:40
  • To be clear, I'm not arguing with your definition of a web app, I'm merely pointing out that you have very selectively cited the wikipedia page you are using to back up your argument.
    – Him
    Commented Nov 13, 2019 at 16:41

I would say simply that:

A web app:

  • is interacted with, more than just reading pages
  • can allow the user to create content
  • often requires logging in

For example, forums, social networks, and all apps designed to replace desktop applications.

A website that is not a web app:

  • is designed simply for reading content

For example, many small business websites, most of the standard sites you see selling ebooks with the massively long pages and never-ending 'discounts'.

Topic of debate: is a blog a web app? I would probably argue that it is, if the users often interact through comments, etc, but it might be more like a web site if there is minimal user interaction other than content consumption.


One of the best litmus tests I've seen for web app vs. web site comes from the scope discussion at Software recommendations:

If you are unsure about your question being about a website (rather then a webapp) ask yourself: "Given I had the program I'm looking for and the means to run it, but not any of the data it contains, would it still be useful?" If the answer is yes, then go ahead and ask. If the answer is no then you are looking for a data collection and this is not what this site is about.

  • So.. SE is not a web app? Without the Q&A of others, non of the SE sites have any value for me. OTOH, if I set up a site where I need an SE-style Q&A, installing SE there makes it an app?
    – user144900
    Commented Feb 17, 2017 at 2:43
  • @Gypsy: I'd say it is. The voting mechanism, gamification, etc., make it more than a site. (Note however that Web Apps isn't for self-installed web applications.)
    – ale
    Commented Feb 17, 2017 at 13:30

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