SPARC (from Scalable PRocessor ARChitecture) is a RISC CPU architecture developed by Sun Microsystems (now Oracle).
SPARC is a RISC CPU architecture developed by Sun Microsystems (now Oracle), used mostly in servers and supercomputers.
An open-source implementation, called the OpenSPARC is available. Common operating systems include Solaris and Linux, though FreeBSD, NetBSD and OpenBSD are available.