Abstract: Web 2.0 applications aim at improving the interaction between users. Web 2.0 principles overlap with characteristics of knowledge management (KM) or could be applied to reshape KM practices. Applying Web 2.0 applications to KM has the potential to improve the sharing and creation of knowledge. However, little research has been conducted in this area. This research aims at identifying Web 2.0 applications for bolstering up organizations’ KM practices. An additional aspect addressed is how Web 2.0 applications for KM can be categorized and how they match different aspects of the KM strategy of an organization. The research examines the suitability of Web 2.0 applications in KM by conducting exploratory case studies in two student‑run organizations, which are an interesting research subject because their members are considered most open towards new technologies. The case studies aim at exploring which Web 2.0 applications are in place. Based on the findings we propose a framework for categorizing Web 2.0 applications for KM. The findings indicate that Web 2.0 applications may enhance KM and may even initiate a new era of KM. Moreover, the article provides a discussion of a number of Web 2.0 applications and proposes a way of categorizing these applications. The proposed framework allows assessing the use of Web 2.0 applications for KM and can be used as an orientation for the introduction of Web 2.0 applications in organizational KM. The research contributes to the general understanding of how Web 2.0 applications can be used in KM. The proposed framework for categorizing Web 2.0 applications provides an orientation for organizations that want to use these applications for bolstering up their KM practices.