If you're a Chrome browser user (or a user of another Chromium-based browser), and you do a lot of work and research in your browser, then you might already be aware of the
Tab Groups feature in Chrome that was rolled out sometime in 2020.
There are a number of Chrome extensions that feature some form of tab features or organizing, but basic grouping can be done without an extension.
Right-click any tab to start adding tabs to a new group, and naming groups as you like. Once you've grouped tabs, you'll see something like the following.
Notice you can choose a color for each tab group, to help you identify them. You can click each group to close or expand them as needed, drag tabs into groups, and so on.
When you right-click a group, you have options to ungroup, close an entire group, and change the group color, among other features.
So if you haven't started using Chrome's built-in tab grouping yet, give it a shot, you'll likely find it useful if you're a 100-tabs-open-at-any-given-time person, like many of us are!
