What is the main feature of web applications?

The main feature of web applications is that they allow users to utilize software without the need for installation on their local machines. This accessibility is made possible because web applications operate over the internet and are typically hosted on a server. Users can access them through web browsers, which means that they can work on their tasks from various devices as long as they have internet connectivity.

This characteristic of web applications enhances usability and convenience, as it eliminates the barriers associated with software installation and updates. Users can benefit from the most recent versions and features of the application automatically, without the need for manual intervention. This feature is particularly advantageous in collaborative environments where multiple users may need to access the same tools simultaneously from different locations.

While some other options touch on aspects of software and web applications, they do not capture the essential nature of web applications as effectively as the ability to use software without installation does. For instance, the idea of requiring installation is contrary to the nature of web applications, and being inaccessible via the internet contradicts the very definition of a web application. The mention of extensive maintenance tools is less relevant, as many web applications are designed to minimize user maintenance needs through automated updates and server-side management.