The LEON3 is a SPARC V8 compliant processor, offering unmatched fault tolerance that makes it particularly suited for high-reliability applications in space. Embodying a well-proven design, it delivers efficient performance while ensuring that critical systems remain operational during radiation events. The processor is fully integrable with the GRLIB IP library, enabling developers to efficiently construct sophisticated systems with a broad range of IP cores. Its adaptability and established success in numerous missions testify to its reliability.