BigLever Software, Inc.
   Makes, sells, supports Software Product Line tools and services: Gears tool lets organizations engineer a software product line portfolio as if it is one system rather than multiple products. Austin, Texas, USA.
   http://www.biglever.com/

Families Project
   FAct-based Maturity through Institutionalizing Lessons-learned and Involved Exploration of System-family engineering, consortium of European companies, research and technology transfer institutions and universities; subproject of Eureka, ITEA. Description
   http://www.esi.es/Families/

Product-Line Architecture Research Group
   The future of software development lies in automating rote tasks. We are exploring different ways in which software development can be automated, productivity increased, and software quality improved.
   http://www.cs.utexas.edu/users/schwartz/

Software Product Family Engineering: PFE
   Conference series; in 2005, was merged into Software Product Lines Conference (SPLC) series; contents and Lecture Notes in Computer Science (LNCS). Digital Bibliography & Library Project (DBLP).
   http://www.informatik.uni-trier.de/~ley/db/conf/pfe/

Software Product Lines: SPLC
   Conference series; in 2005, PFE was merged into this series; contents and Lecture Notes in Computer Science (LNCS). Digital Bibliography & Library Project (DBLP).
   http://www.informatik.uni-trier.de/~ley/db/conf/splc/

Wikipedia: Product Family Engineering
   Encyclopedia article, with links to many related topics.
   http://en.wikipedia.org/wiki/Product_Family_Engineering