Benetl, a free ETL tool for postgreSQL, is out in version 4.4.
This version brings much better peformances with a new functionality: batch mode. In the GUI you can set the number of lines to be commited in a same transaction.
This versions is correcting two bugs: The last line read was forgotten we re-run an EtlTool (bug brought by version 4.3). The last line read was read again if its position in the file is equal to first line to read position, when re-run an EtlTool.