File syncing and sharing service YouSendIt has updated its iOS and Windows apps, as well as releasing Android and Mac versions today with new security features.
In addition to the updates, users of thepreviously mentioned YouSendIt now have more choice among platforms. The mobile apps get a new passcode lock feature for better security as well as interface improvements and the iOS version gets an update and iPad support. The Android version is entirely new and has the same features.
As for desktop clients, the Mac version is a public beta, but it has the same features as the Windows version and adds a more Dropbox-like experience to your desktop. All of the downloads are free, but require a YouSendIt account to use.