Zephyr Software LLC develops tools and solutions for software security applications, compiler suites, software translation, and secure execution of untrusted code. The firm's three primary products are; Zephyr, a retargetable compiler suite based on the Very Portable Optimizer (VPO); Strata, a lightweight, process-level software dynamic translator; and STARS (STatic Analyzer for Reliabilty and Security), a full-function static analyzer that is implemented as a plug-in to the portable IDA Pro disassembler from Hex-Rays. The firm's current focus is on software security applications to protect critical software vital for both running the nation's critical infrastructure and to protect critical defense systems.