Altera® Quartus® II design software is a multi-platform design
environment that easily adapts to your specific needs in all phases of
FPGA and CPLD design. Quartus II software delivers the highest
productivity and performance for Altera FPGAs, CPLDs, and HardCopy®
ASICs. This software is available in a free Web Edition or an annual Subscription Edition. This version supports Microsoft Windows XP, Windows 7 (32 and 64 bit), Red Hat Enterprise Linux 6.0 (64 bit), Red Hat Enterprise Linux 5.0 (32 and 64 bit) and SUSE Linux Enterprise 11 SP1 (32 and 64 bit) operating systems.