Indy's wikipedia entry.....

Indy can refer to:

The SGI Indy workstation from SGI.
Indy, a music discovery system using collaborative filtering conceived by Ian Clarke
The Indy gene found in Drosophila melanogaster, which makes the fly live twice as long. Here, ‘INDY’ stands for “I’m not dead yet!”.
Indy grab, a skateboarding trick.

Indy is also a common abbreviation and nickname:

Indy Media Independent Media Center
A variation of the abbreviation indie for "independent", used in many contexts such as the indie musical genre, indie radio, and indie gaming.
A common nickname for Indianapolis, Indiana'. It often substitutes for "Indianapolis" in phrases, such as "Indy 500", "Indy Racing League", or as a nickname for the "Indianapolis Motor Speedway".
"The Indy" is the nickname for the British newspaper The Independent.
The nickname for the fictional character Indiana Jones.