Memcached by Roberto Zicari · Published January 1, 2011 · Updated February 16, 2014 Free & open source, high-performance, distributed memory object caching system. LINK
VoltDB Open Source / Community Edition February 7, 2020 by Roberto Zicari · Published February 7, 2020
InterSystems (Globals) January 1, 2012 by Roberto Zicari · Published January 1, 2012 · Last modified February 16, 2014
Download kdb+ (32-bit version) for free February 19, 2016 by Roberto Zicari · Published February 19, 2016