Infoworld does an annual review of the best enterprise open-source applications, called the BOSSies, and just announced the 2008 winners. An Infoworld editorial team makes the selections, so this isn't a matter of open-source projects rallying the troops to vote for their projects (which sometimes has odd results, though often gets things right)
- Alfresco, Content Management
- Compiere, Enterprise Resource Planning
- dotProject, Project Management
- Hyperic HQ, Application Monitoring
- Intalio BPMS, Business Process Management
- JasperReports, Reporting
- Liferay Portal, Enterprise Portal
- Magento eCommerce, E-Commerce
- Pentaho Open BI Suite, Business Intelligence
- SugarCRM, Customer Relationship Management
Other categories include the best open-source productivity applications, best open-source middleware, and other categories. You can see the full details here or a snapshot view of the winners over on OStatic.
One nit? I don't like that CentOS was listed as the top open-source operating system. True, it wasn't listed in the enterprise category, but CentOS (which is just Red Hat Enterprise Linux without Red Hat's trademarks) is, in my mind, the worst sort of open source: It sucks money out of the system while giving nothing back. CentOS contributes no innovation to the Linux kernel and instead makes it harder for companies like Red Hat and Novell to invest in research and development.