Esain, founded in 1994, is an Italian software developer specializing in plant design for process and power businesses, with over 3,000 installations and strong ties to Autodesk and Bricsys. They offer a suite of products and services including process, plant, and electrical design tools, alongside training, support, and custom solutions aimed at reducing design time and costs. The company's mission emphasizes user-friendly, high-quality software that promotes project data sharing and compatibility with external software.