OpenLogic announced year-end statistics on enterprise open source adoption based on an analysis of OpenLogic's enterprise customers.

Key Trends for 2007:

• Increased adoption of open source: On average, enterprises reported using 94 different open source packages, up 26% from 75 in 2006.
• Apache license most common license in the enterprise: Breakdown of licenses for the top 25 packages found that Apache, not the GPL, is most common license in packages used in enterprises today. Sixty-two percent of the packages use Apache, 27% use some variant of GPL and 4% each use BSD, CPL, Eclipse, MPL and Perl licenses. Since packages may be released under two or more licenses, percentages total to more than 100%

Top 25 open source software packages (includes ties): OpenLogic ranked the most common 25 open source packages (plus ties), as reported by enterprises. Hibernate and Struts topped the list with more than 71% of customers using each. JasperReports is the only newcomer to the list this year over last year's report.

• Hibernate
• Struts
• Xerces
• Log4j
• Ant
• Jakarta Commons
• JUnit
• Axis
• Spring Framework (Spring)
• POI
• Eclipse
• Apache HTTP Server
• Xalan
• Tomcat
• Velocity
• Jakarta Taglibs (JSTL)
• JDOM
• Perl
• JBoss Application Server
• iText
• dom4j
• Regexp
• MySQL Server
• PHP
• CVS
• JasperReports

Top categories for open source software adoption: OpenLogic also ranked the top categories for open source packages based on enterprise adoption.

• Libraries and Utilities
• XML related
• Application Frameworks
• Development tools
• Build and Source Code Management
• Database and Database tools
• Application and Web Server
• Programming Languages
• Web/HTTP tools
• Security tools
• Web services