We'd really like it if everyone would just use the latest and greatest version of Architect, but we do understand that there are valid reasons for needing an older version.

So, if you have a problem with the latest version, please tell us about it on the Bugs forum.

The current version of Architect is always here: http://sencha.com/products/architect/download

Older versions of Architect 2 can be found in this forum thread

Older versions of Architect 3 can be found here:
Architect 3.0.0: