DOAP (Description of a Project) is an XML/RDF vocabulary to describe software projects, and in particular open source projects.

PropertyDOAP
codeRepositoryrepository/location
programmingLanguageprogramming-language
runtimePlatformplatform
applicationCategorycategory
applicationSubCategorycategory
downloadUrldownload-page
installUrldownload-mirror
operatingSystemos
softwareHelpsupport-forum
softwareVersionrelease
authordeveloper
contributordeveloper
keywordscategory
licenselicense
publishervendor
versionrevision
descriptiondescription
namename
urlhomepage
namename
maintainermaintainer
issueTrackerbug-database
referencePublicationblog