Microsoft Skype recently announced that they are discontinuing Skype Desktop API in order to deliver consistent experience across all the platforms. They have explained their decision with the following message,
We’ve been working hard to develop new technologies and make improvements that will benefit Skype users across all platforms, especially on mobile devices. These changes will significantly improve the call quality and speed of delivery of instant messages, while retaining excellent battery life of mobile devices.
As people are using Skype on more devices, we’re also working hard to create a more familiar and consistent Skype experience across all major platforms.
The Desktop API was created in 2004 and it doesn’t support mobile application development. We have, therefore, decided to retire the Desktop API in December 2013.
If you’d like to provide us with your feedback, simply start Skype and go to Help > Give feedback. Your opinion is important to us and it will help us prioritize potential new features for the Skype users.