How many of you actually believed that Microsoft would support an open source, non-Microsoft platform? In all fairness, they should be crazy to do so. Digium, the company behind the popular PBX program Asterisk, appears to be the first large victim of the all new Microsoft's Skype.

According to a letter which Digium mailed to its Asterisk users, sales and activations of the Skype for Asterisk product will cease on July 26, 2011. The company points out that their product was developed in cooperation with Skype and an agreement was made in order for Digium to acquire and use proprietary software from Skype in order to allow Asterisk to join the Skype network as a native client. Recently (which stands for "after Microsoft purchased Skype") Skype decided not to renew that agreement and Digium cannot package any proprietary software, forcing them to end their product's life.

Digium expects that current Asterisk users will not be affected by this and that they will be able to use their Asterisk systems on the Skype network at least until July 26, 2013.

The full letter can be read here.