Alternatives to Sidewise Tree Style Tabs for all platforms with any license



Web / Online


  • Session Manager icon

    Session Manager

    Session Manager saves and restores the state of all windows - either when you want it or automatically at startup and after crashes....

    Free Mac Windows Linux Firefox

  • Tree Style Tabs icon

    Tree Style Tabs

    This provides tree-style tab bar, like a folder tree of File Explorer . New tabs opened from links (or etc.) are automatically...

    Free Mac Windows Linux Firefox

  • Tab Mix Plus icon

    Tab Mix Plus

    Tab Mix Plus enhances Firefox's tab browsing capabilities. It includes such features as duplicating tabs, controlling tab focus...

    Free Mac Windows Linux Firefox

  • OneTab icon


    Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access...

    Free Mac Windows Linux Chrome

  • Tabs Outliner icon

    Tabs Outliner

    Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works. It allow organizing windows and tabs...

    Freemium Mac Windows Linux Chrome

  • Tab Tree icon

    Tab Tree

    Tab Tree is an extension for Firefox. Tab Tree shows your tabs in the form of a tree structure. And also makes user interface compact...

    Open Source Windows Firefox

  • Vertical Tabs icon

    Vertical Tabs

    This Firefox add-on arranges tabs in a vertical rather than horizontal fashion. It is heavily inspired by and borrows ideas from the...

    Open Source Mac Windows Linux Firefox

  • Tabd icon


    Get content curated by your friends with the powerful link sharing tool you won’t be able to live without.

    Free Mac Windows Linux Chrome

  • Vertical Tabs Popup

    Keep it simple! Vertical Tabs Popup is a very simple extension that lets you see the tabs in a vertical manner in a popup window....

    Free Mac Windows Linux Chrome

  • Super Tab Mode icon

    Super Tab Mode

    Super Tab Mode was a firefox enhancement tool which mainly focused on tab browsing capabilities. It can also block web content, hide...

    Free Mac Windows Linux Firefox

  • TabsFolders icon


    TabsFolders is a session and bookmark manager. It allows you to save all your tabs with one click. Organize into sub-folders. Easily...

    Freemium Mac Windows Linux Web / Cloud

Sidewise Tree Style Tabs Comments

A first real competitor to my Tabs Outliner.

Comment by omnray
about Sidewise Tree Style Tabs Aug 2012

And it has serious guts! How many?

It's Over Nine THOUSAAAND!!!!!

As author say on donation page:

"2+ years and 1500+ man-hours later, Sidewise was born. Weighing in at ~9000 lines of hand-crafted code, Sidewise is one of the most complex Chrome extensions ever created. Even so, great care was taken to keep it lightweight and resource-friendly."

Really know what it is all about, all this "1500+" and "~9000"... so my greetings with release.

Message to author:
Seems you already borrow some concepts from Tabs Outliner and plan to borrow a little more, (as i see from discussions in you customer support threads), my advise - don't be very fanatical with this, or you will lost you distinction. Have the courage to walk you own way. Nobody needs a clone. For example this you non adherent to Chrome tab strip tabs ordering (which as I understand from you support threads you plan to abandon in favor of Tabs Outliner way of dealing with tabs) have real benefits, and in past I really seriously thought about same approach.

Anyway, welcome to the Arena! ; )