ISP Network CAP Monitor is a free Chrome extension developed by Peter Kellner. It falls under the category of Browsers and belongs to the subcategory of Add-ons & Tools.

This extension allows users to keep track of their bandwidth usage against a typical router on a monthly basis. It currently supports only the NetGear ORBI router, but the developer is open to adding support for other routers if contacted.

ISP Network CAP Monitor retrieves data from a specified URL and stores configuration information to accurately track the remaining bandwidth. The extension can be set to refresh at customizable intervals, ensuring up-to-date information on bandwidth usage.