Just made available on codeplex.com:
“Tool to query FAST for Sharepoint and Sharepoint 2010 Enterprise Search. It utilizes the search web services to run your queries so you can test your queries remotely from your local machine. It shows your results, allows you to refine your query (FAST), and page your results.
The FAST for Sharepoint MOSS 2010 Query Tool is a WPF client that allows a developer to explore the scopes and managed properties of a given SharePoint Search SSP, build queries in FQL, Keyword, or SQL Syntax, submit those queries and examine the raw web service results. This tool can be useful in building and troubleshooting your FAST and Sharepoint search queries.”