Ask HN: Favorite extensions/tools to make the HN experience better?

In the search for something like Reddit Enhancement Suite for HN.

Some examples of features useful to me: - Color tagging users so their posts stick out - Keeping track of read/visited links while cleaning out HN favorites - Notifications if someone replies to your post (akin to https://hnreplies.com/)

There are some basic chrome extensions I've found but they seem outdated or don't do any of the above^ asks.

What do you guys use to enhance your HN experience?