Feed Wrangler is an RSS reader, one of a number of apps that sprang up in the wake of Google Reader's demise to help readers who wanted to keep up with RSS feeds. Simply add your RSS feeds to Feed Wrangler, either through its website or one of its apps, and you'll be able to read and sort them. As new items come in, you can read them, mark them to be read later, dismiss them and more. If you use feeds to keep abreast of news or updates, this is a useful tool.