Stilog I.S.T. is a global software publishing company. Stilog IT’s entities in Nanterre and La Ciotat, France, develop innovative solutions, characterized by the pragmatic use of available technologies. Founded in 1991 by Christophe Poirmeur and François Berthelot, Stilog IST’s initial development was based on producing tailored scientific calculation software for large companies in the energy and aerospace sectors. Established in 1994, the company published its first software solution Visual Planning. Dedicated to planning management, Visual Planning was developed to be a user-friendly interactive application. The two “SSII” and “software editing” activities develop in parallel and coexist harmoniously by sharing the same values. The company is based in France and has a subsidiary in the United States. As well as a network of partners in the United Kingdom, Germany, Benelux, Spain, etc.