Epson Perfection V500 Scanner drivers and utility software download page for Windows and Macintosh.
OS: 
Windows 7 (32-bit, 64-bit), Vista (32-bit, 64-bit), XP (32-bit, 64-bit), 2000
Scanner Driver and EPSON Scan Utilityv3.7.7.0 Download (10.8MB)
OS: 
Intel-based Macs with OS X (v10.4.4 – v10.6.x), PowerPC Macs with OS X (v10.3.9 – v10.5.x)
Scanner Driver and EPSON Scan Utility v3.74A Download (14.97MB)