OpenLogic provides enterprise support for a variety of open source software projects. Today the company published a list of the ten applications that its customers purchased support for most frequently.

This is an interesting list because it uses support data instead of downloads as a measure of an application's popularity. And the list is mostly what we'd expect: Apache, MySQL and Subversion are all represented. But since OpenLogic isn't the only provider of support for open source applications, this list might not be entirely accurate.