...
http://s168975732.websitehome.co.uk/images/konakart_logo.png
KonaKart is a free java based online shopping cart application that provides everything that store owners need to sell their products over the Internet. It runs on Tomcat and includes a Java API and SOAP Web Service interface.
LeadsAndDeals.com (Leads and Deals Limited)
LeadsAndDeals.com - LeadsandDeals facilitates a common international business-to-business (B2B) trade platform by connecting global buyers with suppliers. It uses tomcat in several day to day IT operations.
LVM Systems
LVM Systems - develops and markets software and related Internet products exclusively in the healthcare call center industry including WebLink, which is designed to run on Tomcat.
...
http://popcornmonsters.com/images/logo_1.jpg
PopcornMonsters.com - A free movie information portal that averages 100,000 unique visitors a month.
Qcadoo
http://www.qcadoo.com/images/stories/qcadoo/qcadoo%5Flogoqcadoo_logo.png
qcadoo MES - easy to use, extensible and open source manufacturing management system for small and medium companies
...