Jupiter Systems, Inc. Jupiter Systems Inc. (JSI) is a Philippine-based IT company dedicated to delivering business solutions for small to large companies globally. We are one of the most experienced software houses in the Philippines and were one of the pioneers of Enterprise Resource Planning (ERP) in the country. We have also made significant inroads in the market for turnkey development projects that address customer-specific business solution requirements outside of the standard ERIC system. The company continues to evolve and today delivers leading-edge vertical solutions.