Mozilla Connect

asafko · 08-01-2026

Hi folks, Over a year ago, we introduced an updated version of the sidebar that offers easy access to multiple tools – bookmarks, history, tabs from other devices, and a selection of chatbots – all in one place. As the new version has gained popular...

asafko · 10-03-2025

Hi folks! The updated sidebar and vertical tabs are now rolled out and available to all release users on Firefox 136. How to enable itGo to Firefox Settings → General → Browser Layout and check Show sidebar. Then, choose the settings icon in the side...

asafko · 21-11-2024

Hi folks, Over the next couple of months, we will be testing an updated sidebar, its tools, and vertical tabs in the release version of Firefox (remember, a while back, we asked you to try it out in Nightly 131, and we appreciated your feedback and ...

asafko · 24-07-2024

Hi folks, Vertical tabs and a new sidebar experience that make multitasking and context-switching easier are now available in Nightly 131. To try them, update to the latest Nightly and go to Settings > Firefox Labs, and activate the Sidebar and Verti...

asafko · 21-06-2024

Hi folks, In the next few days, we will start the Nightly experiment which provides easy access to AI services from the sidebar. This functionality is entirely optional, and it’s there to see if it’s a helpful addition to Firefox. It is not built in...

asafko · 22-12-2025

Hi folks, Split View feature is now available for testing in Nightly to all users with no restrictions and no pref flipping. How to test: Update to the latest Nightly and see the attached this handy demo for basic Split View interactions. Where to r...

asafko · 01-12-2025

Hi! We are planning to start work on allowing pinning tabs to the sidebar in 2026, as it's certainly something we want to offer.

asafko · 03-11-2025

Hi folks, Thank you for the idea! Right now, we provide the capability to unload all tabs in a group by selecting all tabs, right-clicking, and choosing Unload X tabs option in the tab context menu (rather than tab group context menu). We're not yet...

asafko · 29-10-2025

Hi @falonyates and @myspace, We are actually planning to bring a more robust and functional version of the open tabs/list all tabs menu to the sidebar as a standalone panel. Our current assumption is that it would be mostly helpful for horizontal tab...

asafko · 14-10-2025

Hi folks, This enhancement has just shipped with release 144: once you update, you will be able to drag tabs into closed groups. In a little bit, we will also try to follow up with a small optimization and show an unobtrusive toast notification. Tha...

Mozilla Connect

User Statistics

User Activity

Phasing Out the Older Version of Firefox Sidebar in 2026

Sidebar and Vertical Tabs Launch in Release 136

Sidebar and vertical tabs: release channel experimentation

Firefox Sidebar and Vertical tabs: try them out in Nightly Firefox Labs 131

Share your feedback on the AI services experiment in Nightly

Re: Split-screen/Tab-in-Tab feature (view more than one tab at once)

Re: Allow Us To Add Individual Bookmarks To The Sidebar

Re: Unload all tabs in a group

Re: "List All Tabs" button into sidebar for Vertical Tabs

Re: Add to tab group without expanding