Palantir https://docs.palantir.com/metropolisdev/prism-overview.html
Mozilla (inactive) https://mozillalabs.com/en-US/prism/
CriticalBlue http://www.criticalblue.com/prism-technology.html
Goodwill http://www.goodwilltalentbridge.com/tb/projectPrism.aspx
Universities with projects named PRISM:
Texas Tech http://www.texastech.edu/it/prism.aspx
Georgia Tech http://pag.gatech.edu/prism
Princeton http://www.princeton.edu/prism/industry/industrial_affiliate...
While many of these projects have nothing to do with technology, they illustrate a point: PRISM was a great name for a project. The fact that Facebook has a "Project Prism" too is just coincidence.
---or was.
No more than 105 million gigabytes actually.
I'm totally going to do this.