Skype today announced the availability of Skype for Mac OS X Version 1.0 and Skype for Linux Version 1.0 software applications, enabling high-quality voice calling via the Internet for multiple computer platforms. Previously available in beta versions, Skype for Mac OS X and Skype for Linux software includes free Skype to Skype calling and conference calling for up to 5 participants, cross-platform communications, rich presence and personalization features, and the pre-pay SkypeOut service, allowing users to call any landline or mobile worldwide for the price of a local call.