Some possibilities:

• Teradata express comes in various freebie versions, including some bundled with their own VM.

• If you want something right off left field, Gemstone/S was one of the original OODBMS products and (I think) is available in a freebie version.

• Greenplum has a freebie version.

• Maybe Informix SE. I think the developer edition is free. Also it's dead simple to set up and takes 3/4 of buggerall memory.

Some possibilities:

• Teradata express comes in various freebie versions, including some bundled with their own VM.

• If you want something right off left field, Gemstone/S was one of the original OODBMS products and (I think) is available in a freebie version.

• Greenplum has a freebie version.

• Maybe Informix SE. I think the developer edition is free. Also it's dead simple to set up and takes 3/4 of buggerall memory.

• Sybase Express which is available as a freebie from their web site.

• SAP MaxDB - originally a code fork of Adabas D. It was released under an open source licence about 10 years ago and at one point MySQL was trying to push it. Used in a minority of SAP R/3 deployments and available as a community edition.

Some possibilities:

• Teradata express comes in various freebie versions, including some bundled with their own VM.

• If you want something right off left field, Gemstone/S was one of the original OODBMS products and (I think) is available in a freebie version.

• Greenplum has a freebie version.

Some possibilities:

• Teradata express comes in various freebie versions, including some bundled with their own VM.

• If you want something right off left field, Gemstone/S was one of the original OODBMS products and (I think) is available in a freebie version.

• Greenplum has a freebie version.

• Maybe Informix SE. I think the developer edition is free. Also it's dead simple to set up and takes 3/4 of buggerall memory.