Property:Integrates with

Declares that the subject works closely with the object; Trac works with Git.

Can be viewed as 'supports', for example Trac support Git.

As with other properties, this is a unidirectional relationship. Just because Trac works with Git, does not mean the Git works with Trac in the sense that operations may be initiated from Trac to Git, but not Git to Trac. (By the way, I don't know off-hand if this is actually true, I'm just using it as an illustration.)