An ActionScript 3 driver for mongodb that works without the use of a server side language such as PHP, Java, .Net, etc.
The driver is written in pure AS3 so it is usable in both pure AS3/Flash projects as well as Flex projects.
Current Version: 0.3
Check out the MongoAS3 basic CRUD example application here: Flex Basic CRUD Example. You can right click on the Flex application to view the source.