Revive Adserver and OpenX Source are both open source ad server systems.
OpenX Source is the name of a popular free, open source ad serving system. It was maintained by a company with a similar sounding name, OpenX Technologies Ltd, based in Pasadena, CA, USA. OpenX Source software also had other names in the past, including Openads, phpAdsNew and phpAds.
In September 2013, the OpenX Source project was handed over to a newly formed open source team, and renamed to Revive Adserver. More information can be found on www.revive-adserver.com. Platform IQ is a contributor to the Revive Adserver open source project.