TheTab.Ninja extension is a launchpage shown for each new tab and it allows you to manage and organize your bookmarks and tabs.
BrainTool Alternatives
BrainTool is described as 'Tabs, sessions, bookmark manager. Easily assign a page into a hierarchical set of topics and drop in a note. Then use your topics to open and close tabs and tab groups. Text search, keyboard control, accessible plain text storage' and is a Tab Manager in the web browsers category. There are more than 25 alternatives to BrainTool for a variety of platforms, including Google Chrome, Mac, Windows, Microsoft Edge and Mozilla Firefox apps. The best BrainTool alternative is OneTab, which is free. Other great apps like BrainTool are Session Buddy, Tab Session Manager, Sessionic and Tabs Outliner.