Back in June I posted a Doodle poll here asking about interest in webinars on DNS zone management tools. The topic that got the most votes was VinylDNS, a project Comcast has sponsored and open-sourced. https://github.com/VinylDNS/vinyldns is Apache-licensed, with an active team of 5 core maintainers. It is a relatively substantial zone provisioning system, with a zone database and a GUI portal.
Joe Crowe, Senior DNS/Network Engineer at Comcast and Paul Cleary, Principal Software Engineer for the VinylDNS system will give the talk jointly. They have promised mini-demos illustrating key features.
Two other tools I would still like to get presentations on are: