We have finally released the 1.0 edition of OAT.
for building data source independent rich internet applications that are usable across a broad range of Ajax-capable web browsers.
OAT's support binding to the following data sources via its Ajax Database Connectivity Layer:
SQL Data via XML for Analysis (XMLA)
Web Data via SPARQL, GData, and OpenSearch Query Services
Web Services specific Data via service specific binding to SOAP and REST style web services
The toolkit includes a collection of powerful rich internet application prototypes include: SQL Query By Example, Visual Database Modeling, and Data bound Web Form Designer.
Project homepage on sourceforge.net: