Top Tab Managers

Save and restore the state of windows and tabs.
Automatic saving is also possible, so it can be used as a backup when accidentally closing the window.

Create, modify and quick change tab groups.

Features:

• Full rewrite addon without any third-party libraries
• New Design (fork old addon design Tab Groups )
• Group colored icon
• Added the ability to import the backup groups of the old plug-in "Tab Groups"
• Added support of "Firefox Multi-Account Containers"
• Fully support multi windows
• Save last active tab after change group
• Show current used group in addon icon (see screenshot)
• Add sorting functional "Move group up/down" in group context menu
• Specially NOT supported Private (Incognito) Mode
• Added support switch groups thought keys:
  • Ctrl+1: go to prev group
  • Ctrl+2: go to next group
• Close tab by middle mouse click
• Support very simple switching between groups and tabs using the up, down, right and left keys, and in search mode too

Save articles, videos and todos for later. They'll magically reopen when you need them.

A productivity tool that keeps you focused and helps you stay on top of tasks in your browser.
After email, the Browser is our 2nd inbox! We keep tabs open like todos that require our attention, and they stay around until they're done. Tab Snooze lets you schedule tabs for later, and keeps you focused on what's relevant now. When it's time, tabs wake up with a gentle notification and get you back to where you left off.

See how you are spending your time without lifting a finger. Chronos runs in the background on your phone and automatically captures every moment.

Dropmark is the smart way for teams and individuals to collect, organize, and discuss anything on the web.

The Firefox Multi-Account Containers extension lets you carve out a separate box for each of your online lives – no more opening a different browser just to check your work email! Here is a quick video showing you how it works.

Under the hood, it separates website storage into tab-specific Containers. Cookies downloaded by one Container are not available to other Containers. With the Firefox Multi-Account Containers extension, you can...

Sign in to two different accounts on the same site (for example, you could sign in to work email and home email in two different Container tabs.
Keep different kinds of browsing far away from each other (for example, you might use one Container tab for managing your Checking Account and a different Container tab for searching for new songs by your favorite band)
Avoid leaving social-network footprints all over the web (for example, you could use a Container tab for signing in to a social network, and use a different tab for visiting online news sites, keeping your social identity separate from tracking scripts on news sites)

After installing the Firefox Multi-Account Containers extension, click the Containers icon to edit your Containers. Change their colors, names, and icons. Long-click the new tab button to open a new Container tab.

Privacy in Firefox Multi-Account Containers

The Firefox Multi-Account Containers extension does not send any information to Mozilla.

Haven't I seen this in Firefox before?

Firefox Multi-Account Containers was first introduced as "Containers" available only in Firefox Nightly. It went on to be a Test Pilot Experiment, where we improved the user experience and added new features. Now it exists here as an extension that can be installed by all Firefox users.

Although you can still use the feature built into Firefox Nightly, we recommend using this extension as it has a richer user experience.

A personal startpage and bookmark manager. It helps you to spend less time digging for links and more time browsing them.

TabGroups married with Tab Containers and bookmark & history search

Sync Tab Groups is an easy way to manage all your tabs. You organize them depending on a topic by group. Groups can be closed and reopened without caring about your session. You can easily search, active, move, save and remove your groups and tabs.

Instapaper is a simple tool to save web pages for reading later. To save web pages for later offline reading: go to Instapaper.com, install the Read Later bookmark, and mark any pages you'd like to read later.

It's great for long articles and blog posts that you find during the day and would like to read, but don't have the time when you find them. Save them with Instapaper, then read them when you're commuting, in a meeting, or waiting in line.

Reading list is simple and useful Chrome extensions that maintains list of pages that you plan to read later.

Provides tab groups / panorama functionality using the tab hide api.
Manage tab groups in a compact, tiled groups view.

Bookmark, Archive, Screenshot & Markup - All-In-One Web Collector, must-have research tool

Diigo is the #1 extension for annotating, archiving and bookmarking webpages.

With this easy-to-use tool, you can

1. Bookmark links to archive webpages or to read later
2. Attach highlights & stickies to a webpage as a reminder
3. Share pages with annotation via Twitter, Facebook, Google Buzz
4. Access anywhere, via iPhone, iPad (http://bit.ly/e2ujpL ), Android (http://goo.gl/tvbuq ).
5. Create groups to pool findings, share resources or curate content
6. Automatically cross-post to social bookmarking site Delicious (optional)

?For Those with Privacy Concern ?
Chrome will alert you that the extension may access all your data.
Here is the whole story:
This extension has bookmark, highlight and add sticky note features. These features need the privilege to access your pages. However, we never collect any of your data unless you select some content and choose to send it to diigo. Don't worry. We are also internet users and don't want to be evil.

Organize your digital life - Work with notes, to-dos, bookmarks and all your content in one incredible place.

A privacy-focused bookmark manager to save webpages, texts, images, videos, pdfs & more.

Save & Organize webpages, texts, images, videos, pdfs & more.

Trove is a modern, beautiful and secure decentralized bookmarking app powered by Blockstack and Gaia storage. Trove's Firefox add-on allows you to save anything (pages, text, images, videos, pdfs) from the web easily.

With just a few clicks, you'll be able to quickly save and organize your bookmarks directly into Trove. The extension also allows you to add categories and tags to organize bookmarks better. Privacy is built-in into Trove, so capture and manage your articles, reading list, or anything you find interesting without the fear of someone listening to you. Blockstack and Gaia storage enables you to have complete control of your identity and data. The data stored in Trove are encrypted (end-to-end encryption), which means that you own your data, and only you can access it with the keys that you hold. No one, not even Trove, can see or read inside your storage.

One platform to organize all your highlights - import Kindle highlights and annotate the web with the built-in highlighter.

Manage Your Browser Sessions

View and save the state of all open browser tabs in the current or past browser sessions.

Quickly restore your tabs and resume your web surfing after a browser or system crash.

Edit the sessions you've saved and restore them into the desired set of windows at any time.

Create a session from a list of URLs and export sessions to text or CSV format.

Consolidate sessions and eliminate duplicate tabs with ease

Save up to 95% memory and reduce tab clutter in Google Chrome and Mozilla Firefox.

Save Anything from Around the Web, organize with ease, ind your content with search, and collaborate.