The 25Live Google Calendar Extension is a beta phase Chrome extension developed by mischapdx. It falls under the category of Browsers and the subcategory of Add-ons & Tools. This extension allows users to interact with Google Calendar by integrating 25Live data.

With this extension, users can easily select an available space from 25Live and update the location field in an open Google event that has already been saved. To ensure smooth functionality, users need to specify the root WebServices URL in the extension's options before using.

Please note that as this extension is in beta phase, it may have some bugs or issues that are being worked on. However, it offers a convenient way for users to integrate 25Live data into their Google Calendar, enhancing their scheduling and event management experience.