While we have been putting effort into supporting Facebook APIs we have also been adding our own about 50+ of them! We are in process of automating the documentation for ALL the api's, they will be available here

API By Category

Have ideas for more things which should be part of the core platform? Have an API you want baked in or at least visibile to others? Get involved in our development community and we can

Facebook Compatibility List

[admin.getAllocation] [admin.getAppProperties] [admin.getDailyMetrics] [admin.setAppProperties] [application.getPublicInfo] [auth.createToken] [auth.getSession] [auth.promoteSession] [batch.run] [data.getCookies] [data.setCookie] [events.get] [events.getMembers] [fbml.refreshImgSrc] [fbml.refreshRefUrl] [fbml.setRefHandle]

[feed.publishActionOfUser] [feed.publishStoryToUser] [feed.publishTemplatizedAction] [fql.query] [friends.areFriends] [friends.get] [friends.getAppUsers] [friends.getLists] [groups.get] [groups.getMembers] [marketplace.createListing] [marketplace.getCategories] [marketplace.getListings] [marketplace.getSubCategories] [marketplace.removeListing] [marketplace.search]

[notifications.get] [notifications.send] [notifications.sendEmail] [notifications.sendRequest] [pages.getInfo] [pages.isAdmin] [pages.isAppAdded] [pages.isFan] [photos.addTag] [photos.createAlbum] [photos.get] [photos.getAlbums] [photos.getTags] [photos.upload] [profile.getFBML] [profile.setFBML] [users.getInfo] [users.getLoggedInUser] [users.hasAppPermission] [users.isAppAdded] [users.setStatus]

Or, see the API Comparison Spreadsheet on Google Docs