Extensions in the Microsoft Edge sidebar - Microsoft Edge Development

The sidebar (or side panel) feature of Microsoft Edge extensions enables an extension to display custom UI content in the browser sidebar.

How to install Edge browser extension from outside Microsoft Store

New Microsoft Edge Sidebar Extensions Tips HTMD Blog

Microsoft Edge Add-ons

Microsoft Edge - Wikipedia

New Microsoft Edge Sidebar Extensions Tips HTMD Blog

Microsoft Edge Adds Sidebar Extensions - Increase User Productivity - Vietbay

Bing Chat Sidebar in Google Chrome? This extension will make it possible.

Sidebar Apps is now available in the Microsoft Edge Add-ons Store

Enabling Sidebar on Edge

Microsoft Edge is rolling out to all Windows 10 users - 9to5Google

Microsoft Edge – Sidebar

Better Than Chrome: 21 Hidden Tricks Inside Microsoft's Edge Browser