If you support or are planning to support x-callback-url, please let us know at info _at_  x-callback-url _dot_ com, or @xcallbackurl.

Apps with x-callback-url interfaces (links to API documentation)

• Instapaper
• Google Chrome
• Tumblr for iOS
• TextExpander Touch
• Prizmo
• Drafts
• Terminology
• Due
• Definition
• Scanner Go
• iCab Mobile
• Phraseology
• iZettle
• Notesy
• Poster
• ClouDrop
• Launch Center Pro
• Missives
• RollPG
• Kippster for Kippt
• iPGMail

Know of an app supporting x-callback-url not list here? Please let us know!

A directory of apps supporting x-callback-url is maintained at handleOpenURL.com, and excellent resource for finding out about all sorts of great URL actions available on iOS.

Visit x-callback-url app directory.