X-callback-url: a list of apps(philgr.com)
philgr.com
X-callback-url: a list of apps
http://philgr.com/blog/Esquemas-Biblioteca-x-callback-url
1 comments
Skip the first paragraphs if you don't know portuguese, they're solely introductory. In this article you'll find a more updated list of apps that support x-callback-url, as I believe the one held at http://x-callback-url.com/apps/ is drastically outdated. Hope it helps you out.