Web application (Web app)

A Web application (Web app) is an application program that is stored on a remote server and delivered over the Internet through a browser interface. Web services are Web apps by definition and many, although not all, websites contain Web apps. According to Web.AppStorm editor Jarel Remick, any website component that performs some function for the user qualifies as a Web app.

Web applications can be designed for a wide variety of uses and can be used by anyone; from an organization to an individual for numerous reasons. Commonly used Web applications can include webmail, online calculators, or e-commerce shops. Some Web apps can be only accessed by a specific browser; however, most are available no matter the browser.

How Web applications work

Web applications do not need to be downloaded since they are accessed through a network. Users can access a Web application through a web browser such as Google Chrome, Mozilla Firefox or Safari.

For a web app to operate, it needs a Web server, application server, and a database. Web servers manage the requests that come from a client, while the application server completes the requested task. A database can be used to store any needed information.

Web applications typically have short development cycles and can be made with small development teams. Most Web apps are written in JavaScript, HTML5, or Cascading Style Sheets (CSS). Client-side programming typically utilizes these languages, which help build an applications front-end. Server-side programming is done to create the scripts a Web app will use. Languages such as Python, Java, and Ruby are commonly used in server-side programming.


Web applications have many different uses, and with those uses, comes many potential benefits. Some common benefits of Web apps include:

  • Allowing multiple users access to the same version of an application.
  • Web apps don’t need to be installed.
  • Web apps can be accessed through various platforms such as a desktop, laptop, or mobile.
  • Can be accessed through multiple browsers.

Web Application vs. other application types

Within the mobile computing sector, Web apps are sometimes contrasted with native apps, which are applications that are developed specifically for a particular platform or device and installed on that device. However, the two are not mutually exclusive. Native applications are applications typically downloaded and made specifically for the type of device it is downloaded on. Native apps can commonly make use of the device-specific hardware, such as a GPS or camera on a mobile native app.

 Programs that combine the two approaches are sometimes referred to as hybrid applications. Hybrid apps work similar to a Web app but are installed to the device as a native app would be. Hybrid apps can also take advantage of device-specific resources by using internal APIs. Downloaded native apps can sometimes operate offline; however, hybrid apps don’t have this functionality. A hybrid app will typically share similar navigation elements are a Web app since they are based on Web apps.

This was last updated in August 2019

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Do you prefer to use Web, native, or hybrid apps?
Hi Margaret! Good post :)

I prefer hybrid apps! But one question that is not clear to me is whether there is any difference between web application and hybrid application. It would not be more correct to use the term hybrid app for applications developed with HTML5, CSS, Javascript and webview (downloaded from App Stores and installed on device) and web-browse app for applications accessed via browse?
Better than others thanks a lot 
Ashrafyousuf, agree, a nice one. I'm started digging into the topic of a web app development, this article also helped me a lot

See the diagram of a web app architecture to get "the big picture" of a project.
And apart from the web/native/hybrid types of apps there is also a classification of architecture types: service-oriented, single-page and serverless ones - it's also good to know for both young developers and product owners.
Hi : Is there such a thing as a " free service provider, or free internet service" in order that I can use G mail or AOL Services ! This question might be a bit strange but my present ISP, "required opening an email account  with them " and my previous ISP to still use my old E mail account  with them . In order to do this they actually instructed me and , manually, provided a form to be use this new Email with AOL which is a free email !!!! Result : My present ISP was charging me a higher monthly service than originally agreed upon.!