Old versions of Skype if you want to explore their structure, resources or view the interface through Process Hacker 2
These versions have been disconnected from the server for a long time, logging in through them is impossible!
          Skype 1.4.0.84

Direct exe file.
without installer
          Skype 3.6.0.248
          Skype 4.1.0.130

Direct exe file.
without installer
          Skype 4.2.0.187

Portable
          Skype 5.10.0.116
          Skype 6.14.0.104
          Skype 7.29.0.101

Repack (rsload.net)
          Skype 7.32.73.104
          Skype 1.0.0.29

One of the first versions ever released
          Skype 2.5.0.151
          Skype 3.8.0.188

Direct exe file.
without installer
          Skype 4.0.0.227
          Skype 4.2.0.187

Installer
          Skype 5.0.0.156
          Skype 6.0.60.126
          Skype 7.15.0.103

One of the last versions where the window does not appear
"To continue using Skype, please update it"
DOES NOT connect to servers
Archive of versions
old official versions