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• Providers
  • Google (Provider for Google Contacts)
  • Plaxo (Publisher/Consumer)
    • Portable Contacts at Plaxo
  • Portable Contacts support is part of OpenSocial REST Protocol
    • Supported in MySpace's OpenSocial APIs.
    • Supported in shindig (OpenSocial reference implementation in Java and PHP)
    • Supported in partuza (sample social network using shindig-php)
  • Microsoft supports Portable Contacts as an output-format of their Contacts API in LiveFX
  • Yahoo does not currently support Portable Contacts, but does have their own OAuth-protected Contacts API.
  • AOL does not currently support Portable Contacts (but does have other APIs).
  • DandyID (docs)
• Consumers
  • Synqit (Consumer) Imports contacts into Skype for Windows.
  • Cliqset
  • Goodreads (for Plaxo import)