* NullObjectPattern
 * ParameterObjectPattern
 * Linda Rising's [[http://www.smallmemory.com/almanac/|Patterns Almanac 2000]] (ISBN:0201615673) provides a brief description of a large catalog of patterns from various authors.
 * Floyd Marinescu's ''EJB Design Patterns: Advanced Patterns, Processes, and Idioms'' (ASIN:0471208310) is available as a [[http://www.theserverside.com/books/wiley/EJBDesignPatterns/downloads/ejbdesignpatterns.pdf|pdf]], but I haven't yet found an online list of the patterns. 
 * Alur, Crupi, and Malks' [[http://www.corej2eepatterns.com/Patterns2ndEd/index.htm|visual catalog]] from ''Core J2EE Patterns'' (ISBN:0131422464)
 * Hillside.net [[http://hillside.net/patterns/onlinepatterncatalog.htm|Patterns Catalog]] ''or meta-catalog''
 * See also RefactoringCatalog as many refactorings lead toward patterns.