Servebox ActionScript Foundry and a DotNet back-end.
We successfully used the DotNet framework for a customer Project backend, with the opensource project fluorinefx ( http://www.fluorinefx.com ). Our framework include now a DotNet project for TransferObject and ValueObject strong type mapping between flex client and fluorinefx backend.
Checkout at sf.net
We created a short patch to the Maven Wagon SSH provider. The standard provider allows you to use a passphrase, but it has to reside (in clear text) in your settings.xml file. To avoid this problem, if the passphrase is an empty string, the modified version of the wagon will prompt you for the passphrase in a Swing options pane.