Later column-oriented database packages included:
1993: KDB
1995: Sybase IQ
Since about 2004 there have been additional open source and commercial implementations. MonetDB was released under an open-source license on September 30, 2004,[19] followed closely by the now defunct C-Store.[20]
C-store was a university project that eventually, with team member Michael Stonebraker staying on, led to Vertica, which he co-founded in 2005.[21][22]
The MonetDB-related X100 project evolved into VectorWise.[23][24] Druid is a column-oriented data store that was open-sourced in late 2012 and is now used by numerous organizations