CMIS content management APIs accessible through Flex+AIR and Flex+Browser RIA clients.
CMIS Spaces is built around FlexSpaces, and it benefits from the Cairngorm Presentation Model pattern, as well as the Spring ActionScript. What's more, CMIS Spaces has also extended the as3atompub for CMIS AtomPub REST, ensuring that browsing and searching can proceed at a steady pace. This is true whether you are using either Flex+AIR or Flex+Browser.
Moreover, should you choose to use Flex+AIR, you will find that the headers and delete/put http verbs for atompub updating can all be easily handled. But even if you are more at home with Flex+Browser, there's no need to despair: CMIS Spaces can be configured to use sockets (via as3httpclientlib), or BlazeDS/LCDS proxy can be used to handle headers/delete/put on Flex+Browser instead of sockets. All in all, then, CMIS Spaces is a powerful and highly versatile piece of software, sure to please those who work with ECM/CMS on a regular basis.
Version 10: N/A