Session Buddy - Manage Your Browser Sessions
Toby - Better Than Bookmarks
Workona - A better way to work in the browser.
WorkspacePro - Launch a bunch of macOS apps from menu bar just in 1 click!
xTab - Limit the maximum number of tabs you can open at once
Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.