Zot is a webMTA for privacy aware web communication with emphasis on giving you the choice on your needs for privacy.
These webpages are currently built, but you can already find a few information, such as Zot specs and links to all parts of the Zotlabs|Suite.

The Zotlabs | Suite consists of these individual projects:

Zotlabs | Hubzilla - the privacy aware publishing platform with many features

Zotlabs | Zap Mike Macgirvin's Zot only Social Network

If you are unsure, which to chose, here is a comparison.

Zot is the brainchild of Mike Macgirvin, who maintains his own zotlabs.com page.