What's an RSS Client?
An RSS client is a type of application for subscribing to RSS feeds—you need them in order to use RSS.
There are several types of RSS clients: some RSS clients are applications that you install in your PC, i.e. they're local RSS clients (sometimes called "desktop" RSS clients) and run locally, some also exist as apps for smartphones; some RSS clients are online services that charge a subscription fee; some RSS clients are built into other applications, e.g. Vivaldi is a web browser that has an RSS client built-in, Thunderbird is an e-mail client that also supports RSS feeds.
Generally, RSS clients are free, and many of them are also open source (libreware).
