This extension: https://chrome.google.com/webstore/detail/the-great-suspende... helped me a lot keeping multiple tabs under control. I tend to leave tabs open for days, sometimes weeks, and come to them later. I don't want to waste memory all that time to just keep a tab open. So this extension helps with that.
https://chrome.google.com/webstore/detail/tabattack/ginflokh...
It's able to save tabs and windows to the file system as Markdown and restore them from these files, too.
I would love to get feedback on it.