You've had them on the iOS app, Android and Amazon Fire Tablet. But now these new features have joined the website at comixology.com.
Click on My Books and the Smart Lists will allow for a quick and easy way to track what you're reading through "In Progress" and "Unread" lists.
You'll also have the ability to see what you've recently downloaded through the "Recently Purchased" list and create your own "Wish List" using their enhanced recommendation feature.
You can also navigate to Browse Library, Bundles, Wish List, Backups, and Archive. Browse Library is where you can drill down into the depth of your collection with new sorting and filtering options