SEI's products and services are custom tailored to suit the needs of today's computer savvy REALTORS®. All of our MLS applications are designed, implemented, and supported by our in-house staff of programmers and technicians. This enables our company to quickly and efficiently adjust our products to the ever changing needs of the real estate industry. SEI is the leading MLS provider for today's REALTORS®. NAVICA REVOLUTION, a premier online MLS System, includes Showing Manager, Data Validation, IDX/VOW, Buyer/Seller Gateways. Offers NAVICA STREAMLINE AMS with NRDS Sync and QuickBooks Integration.