Microsoft has many programs and tools that releases for free, but they are very hard to find. Here but you can find a list of these programs with the explanation of their usefulness.
Today and every Tuesday of the month of August Skype offers free calls 20 minutes (in the form of credit). Just go to the website of Skype , just log in and take the gift. Tuesdays in August are now, 8, 15, 22 and 29. Segnateveli on the calendar.