The Most Populer Version of Skype

Skype is a client that allows you to make phone calls through your computer. Their tag line used to be: "The whole world can talk for free."

Caution: Installing a Skype version older then 4.2 can WIPE all your contacts. Please be careful! See this discussion page for more information.

After downloading and installing Skype, you may immediately call other Skype users for free or use their pay Call-to-Phone system to call phones directly over VoIP. 

One note that may be of use to OldVersion.com visitors is that if you are looking to download Skype to call phones within the US (and you yourself live in the US), Google Voice allows you to do so free of charge. 

Skype 2.5 is the earliest version that functions. Versions prior to 2.5 do not install (tested on Windows 7).

If you wish to use the video-calling feature, OldVersion.com recommends using version 4.0+ of Skype.