Talend
Pentaho Kettle
And a nice little article comparing these 2 leading FOSS around ETL:
http://blogs.ittoolbox.com/bi/websphere/archives/wiki-wednesday-comparin... [1]
Will try the two and post my findings at a later date...
(Thx Jason for the link to Talend)
Links:
[1] http://blogs.ittoolbox.com/bi/websphere/archives/wiki-wednesday-comparing-talend-and-pentaho-kettle-open-source-etl-tools-16294