TAG (Oregon, Iowa, Virginia)
GT/GAT/GATE (California, Minnesota, Virginia, Colorado, Alabama, Washington, N. Carolina, Maine, Michigan)
B'Yon (Louisiana)
Project Potential (Arizona)
ALPHA (Iowa)
SPARKS
Odyssey of the Mind
CLUE (Tennessee)
Horizons/GAT (Ohio)
Kaleidoscope
GATORS
ACE
SRA/Extended Learning (Kansas)
MGS
Gateway (Indiana)
Superior Student Research (Wisconsin)
Academically Talented
SPIRALS
Project Spectrum
Enrichment Resource Center
Quest (Ohio)
Gifted Self
Talentpool (Alabama)
Search (Georgia)
Enhanced Learning (Florida)
Explorer
ESP (Massachusetts)
LEAP (Pennsylvania)
AGT (Hawaii)
SPACE (Alabama)
REACH (Georgia)

And probably a whole lot more. Seems like names changed over time or varied perhaps from district to district. Frequent name changing is such a confidence booster. :P This list was just from this thread. Looking at the names of the programs are kind of interesting considering all that we have uncovered in the last few weeks. If I remember the way that the federal laws worked in regards to the establishment of gifted programs, I believe that all the states were mandated to identify them and only received some nominal additional funding if they developed a program for those students. Something along those lines.

It's also something that is definitely international. The list here, as far as the US goes, doesn't seem to be inclusive of a whole lot:

[link to en.wikipedia.org]