Chrome: If you use a lot of Chrome extensions, then you know Chrome's built-in extensions manager doesn't give you much control. NooBoss is an extension manager that allows you to control which sites extensions work on, monitor when they update, and more.
While it's a little absurd to install an extension to manage extensions, NooBoss does have some neat tricks up its sleeve. For example, you can get a history of extension updates, which is useful when something goes wrong, especially since most Chrome extensions update themselves without letting you know.
You can also restrict extensions to certain sites, so it will only run when visit specific URLs. This is handy for any extensions that tend to cause problems on certain sites. It can also do normal manager things, like delete or disable extensions.
There's also an opt-in function that suggests new extensions based on the site you're currently viewing, with a community tool for voting on the most useful ones. It's an interesting idea, but unless you're really into the idea of extensions, it's not particularly useful. NooBoss does require some hefty permissions, but you can check it out on GitHub if you're curious about what it's doing.