Where can I find older versions of Eclipse ADT

You can find the old versions of the ADT at the following URLs (it looks like Google keeps them around, but doesn't advertise how to locate them).

• http://dl.google.com/android/ADT-0.9.5.zip
• http://dl.google.com/android/ADT-0.9.6.zip
• http://dl.google.com/android/ADT-0.9.7.zip
• http://dl.google.com/android/ADT-0.9.8.zip
• http://dl.google.com/android/ADT-0.9.9.zip
• http://dl.google.com/android/ADT-8.0.0.zip
• http://dl.google.com/android/ADT-8.0.1.zip
• http://dl.google.com/android/ADT-10.0.0.zip
• http://dl.google.com/android/ADT-10.0.1.zip
• http://dl.google.com/android/ADT-12.0.0.zip
• http://dl.google.com/android/ADT-14.0.0.zip
• http://dl.google.com/android/ADT-15.0.0.zip
• http://dl.google.com/android/ADT-20.0.0.zip
• http://dl.google.com/android/ADT-20.0.3.zip
• http://dl.google.com/android/ADT-21.0.0.zip
• http://dl.google.com/android/ADT-21.0.1.zip
• http://dl.google.com/android/ADT-21.1.0.zip
• http://dl.google.com/android/ADT-22.0.0.zip
• http://dl.google.com/android/ADT-22.0.1.zip
• http://dl.google.com/android/ADT-22.0.4.zip
• http://dl.google.com/android/ADT-22.0.5.zip
• http://dl.google.com/android/ADT-22.2.0.zip
• http://dl.google.com/android/ADT-22.2.1.zip
• http://dl.google.com/android/ADT-22.3.0.zip

You can use these in Eclipse by first downloading the desired ADT zip to your local drive, then choosing "Install New Software", "Add Site", "Archive".

this page always has the latest ADT available as a zip file

http://developer.android.com/sdk/eclipse-adt.html

and you can use the wayback machine to find older versions of that page, with a link to the older version of ADT

http://wayback.archive.org/web/*/http://developer.android.com/sdk/eclipse-adt.html