Support
You can always get free support for Zeta Components like in every other Open Source project. Check out the Community section for details on ways to get in touch with the developers.
Another way to get support is by using the issue tracker for Zeta Components.
Commercial support
There are also companies providing commercial support for Zeta Components:
Qafoo GmbH - passion for software quality
Founded by some of the core developers of Zeta Components, Qafoo provides support for Zeta Components and general consulting and training on software quality tools and processes.
thePHP.cc (The PHP Consulting Company)
Co-founded by one of the core developers of Zeta Components, thePHP.cc provides support for the Workflow engine that is part of the Zeta Components as well as general PHP-related consulting and training with a focus on architecture, quality assurance and security.