It is Pentaho's intention to avoid having to fork and maintain third party open source software, but on a few occasions it has been necessary. The following list is of the current third party maintained forks that Pentaho includes in our product.
Kettle-VFS (Fork of Apache VFS) (MattC)
Hive JDBC (Will)
Pentaho OFC4J (Will)
Kettle VFS is a maintained fork of Apache Commons VFS