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Here are the people who actively participate in the development of the Tesseract Project.
François is the main architect and chief developer of the Tesseract Project. He has been working with TYPO3 since 2004 and is a Core Team member since late 2008.
Fabien got involved in the Tesseract Project by developing the "templatedisplay" extension. He then developped other extensions like "phpdisplay" and "displaycontrolleradvanced". He has been using TYPO3 since 2006 and is an active community member. In particular he did a lot of work on the new skin delivered with TYPO3 4.4.
Roberto has become very well-acquainted with Google Mini and Google Search Appliance. He applied that knowledge to the development of the "googlequery" extension. Roberto has been working with TYPO3 since 2008 and is a Certified TYPO3 Integrator.