This article presents a synthetic assessment of the equipment of firms with various ICT (information and communication technologies) and management tools in 2006, and the evolution from 2003 to 2006. Data are drawn from the COI-TIC 2006 survey. The authors point out that ICT and management tools are only partially complementary. Although both types of tool are found in large firms, ICT are used extensively in the service sector, whereas management tools for production and work systems and for inter-firm relations are used more in industrial firms, especially those that operate as sub-contractors or that externalize work. The recent diffusion of these two types of tool has not followed a logic of catching up, but rather one of bipolarization: firms already well equipped in 2003 equipped themselves even more to catch up with the leaders. Finally, the complexity of the organization, measured by the number of functions managed internally, the hierarchical structure, or the actors involved in the organization of tasks, plays a significant role in firms' decisions to acquire these different tools.