I would like to use WordPress to not only run my site, but also to manage users, handle authentication, and read/write content via a client application, but I would like to avoid writing everything from scratch on the PHP-side, as I don't know PHP that well.
Is there a "Services" plugin similar to that in Drupal, or something else that can give me easy access to using WordPress as a data-store for a client application?
Thanks much in advance for all of your assistance!