A large fraction of our information, both in the professional and private domains, is stored in the form of files on our personal computers. When we collaborate with co-workers or meet with friends, mechanisms for sharing files and file annotations are frequently required. However, centralized file sharing infrastructures are often not available or complicated to set up, and approaches like peer-to-peer sharing infrequently provide functionality beyond simple copying of files between machines. In this paper we present a light-weight approach for ad-hoc file sharing based on Linked Data principles. Our system exposes parts of a file system as Linked Data and allows users to interlink and annotate resources in such linked file systems. We further provide a mechanism for mounting multiple such file systems together, and for seamlessly navigating them using a common Web browser. As the exposed files and directories become Web resources, they are amenable to a large set of Semantic Web and Linked Data tools. Human and machine users may exploit such linked file systems in ad-hoc data sharing scenarios. They may further add arbitrary annotations to local and remote linked file system resources, which may also be shared among users. Finally, file system objects may be searched based on their extracted metadata and such semantic annotations.

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