Resources for developers are provided in our documentation. Check out the docs if you're looking for details like platform requirements, configuring site settings, or writing your own plugins.
If you have a self-hosted Known site, and you want to talk to other people maintaining or building Known sites, you may want to join our developer mailing list, leave a comment on Github, or join our IRC channel at #knownchat on Freenode.
Our Known community forum is coming soon. In the meantime, you can send us a tweet or read our Known stream to stay up-to-date on the latest changes to Known.