FoxyTab is a small extension that adds a great number of Tab related actions to the Tab Context Menu plus Tab Counter, Country Flag, Multiple Date & Time display in multiple languages and many more. Note: Right-Click on Tab (on top) to get the context-menu. Note: None of my extensions contain any tracking, advertising or privacy infringement. Actions can be applied to a Tab, selected Tabs, All Tabs, Tabs to the Left or Right. Features

Bookmark
Capture
Clean URL (remove tracking/redirecting strings from Tab URLs)
Close Bookmarked Tabs
Close Duplicate Tabs
Close Other Windows
Container (set patterns to automatically open Tabs in containers)
Copy (Title, URL, IP, Custom)
Create Desktop Shortcut
Date & Clock (multiple languages & time-zones in the Toolbar popup)
Discard
Editable Context Menus (enable, disable, move)
Hide & Show
Host (Keep, Close, Close other, Move to New Window, Reload)
Keyboard Shortcuts
Merge All Windows
Move (to New or Private Window)
Pin & Unpin
Print
Redirect (set custom rules to redirect Tabs)
Reload (Group, 1-5 minutes, Custom interval)
Save Tab as PDF
Select Match based on Regular Expression pattern
Show Flag (IP location & country flag; using internal database)
Sort (by URL, Title, Last Accessed, Reverse; Ascending or Descending)
Tab Counter (with editable color & background)
Theme (create your own Firefox Theme)
Help Guide

Permissions

Read and modify Bookmarks: Used only to add bookmarks
Input data to the clipboard: Used to Copy to Clipboard
Download files and read and modify the browser’s download history: Used only to export Themes/Preference (nothing to do with download history)
Display notifications to you: Used to inform users
Hide and show browser tabs: Part of features
Access browser tabs: Used to get data for tab operations
Store unlimited amount of client-side data: Used to store extension data
Access your data for all websites: Used to get IP for the Copy IP & Flag

External Reviews FoxyTab is a highly customizable tab manager extension for Firefox How to save the names and URLs of open Firefox tabs in a plain text file Dica do Dia: Extensão FoxyTab para o Firefox Mozilla Re-Mix: FirefoxのタブコンテキストメニューからURLの一括コピーなどができるアドオン「FoxyTab」開いているタブのURL を一括してコピーしたり、左にあるタブを一括して閉じたりできるようにするFirefox アドオン「FoxyTab」 - フリーソフト・無料ソフトの番外編 How to add new tab options to context menu in Firefox [Tip] | Reviews, news, tips, and tricks | dotTechdotTech [WebExt扩展] FoxyTab（简洁的标签页增强扩展 FoxyTab – 增强标签页栏上鼠标右键菜单[Firefox 扩展] How to Customize Firefox’s Context Menus With Extensions