Property:URL

From semanticweb.org

This property specifies a general URL, but should normally not be used directly. Instead, use one of its subproperties as applicable:

• Property:Homepage (homepages of anything)
• Property:Paper URL (URL for related papers/publications)
• Property:Software URL (software downloads)
• Property:Documentation URL (online documentation)
• Property:Source URL (software source code)
• Property:Statistics URL (... ??)