[brynedwards]

The list seems out of date, InfiniDB has been open-sourced since Calpont went bankrupt, and Greenplum is open-sourced under Apache 2 license[1]. There's also MariaDB Columnstore, a fork of InfiniDB[2].

1. http://greenplum.org/

2. https://mariadb.com/products/mariadb-columnstore