Index - X
| X11 | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| X11_distribute_modifications_variant | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| X86_64 | Distribution.System | 
| Xerox | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| XFree86_1_1 | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| Xinetd | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| XmlSyntax | Language.Haskell.Extension | 
| Xnet | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| Xpp | Distribution.SPDX.LicenseId, Distribution.SPDX | 
| XSkat | Distribution.SPDX.LicenseId, Distribution.SPDX |