I made a simple firefox/chrome extension for people that horde tabs as temp bookmarks. You might find it useful to find tabs and quickly navigate to them by clicking on the link in the list. It's free and open source. The github page has a gif showing usage. You can also type cmd-shift-e or ctrl-shift-e to switch to it.
In Chrome you can press "Ctrl/Cmd + Shift + D" and bookmark all open tabs into a folder. Then you can right click on the folder later to open all those tabs.
Chrome Extension: https://chrome.google.com/webstore/detail/tabist/hdjegjggiog...
Firefox Extension: https://addons.mozilla.org/en-US/firefox/addon/tabist/
source code: https://github.com/fiveNinePlusR/tabist
Let me know if you find it useful or have any suggestions. (patches are awesome too)