Information systems may be used for several purposes in an organization. They are often the basis of operations and activities. For example, information systems and technologies can be an integrated part of the production process. Information systems have also an important role in management and development of the organization. Here information, its management and sharing throughout the company have a decisive role. It may still be argued that in many cases information systems are not used in the best possible way. For example, a lot of information remains personal property even though it might be valuable when shared with colleagues. In this paper we look at the role and use of information systems in information sharing. The paper explores the challenges in sharing of information and knowledge. Technology can be used here, especially if the information can be expressed in written format. When information is more tacit, complex and based on expertise also personal interaction is important in information sharing.