If you want access to the best features of Dropbox or one of its many competitors—automated file syncing between computers, a way to automatically keep old versions of your synced files, etc.—but you don’t want to keep your stuff in someone else’s cloud, AeroFS is a promising service. It can provide file syncing for many clients using your own local server (or, for businesses, Amazon S3 storage that you have more direct control over). When we last wrote about the service, it was still in an invite-only beta, but a message that went out to users last night declared that this beta is over and that the service is now open to anyone.
