PeeringDB is an open and free database that offers information related to peering in a centralized and updated way. Initially created by Richard Steenbergen, it has recently been updated to refresh its image, its database, and it also includes APIs for an easy offline use.
There is an organization in charge of keeping the PeeringDB updated and making decisions on its design and updates. A group of selected people between volunteers form this organization. The PeeringDB contains information about peering and contact network, traffic exchange points and other related facilities.