Alco Blom, developer of the popular URL Manager Pro, today announced the availability of SMS Mac public beta 0.9.4. SMS Mac is an Address Book plug-in that allows users to easily enter an SMS message and send it to any mobile number world-wide through the Internet. A mobile phone is not required. SMS Mac supports Flash SMS (Europe only), Unicode and long messages (concatenated SMS). Many more features are planned in future releases. SMS Mac requires Mac OS X 10.3 or later.