This study examines how reference librarians use cloud computing technologies, particularly the general-purposed, consumer-oriented software as service (SaaS) tools, to support and facilitate their work. A survey was conducted and the findings suggest that librarians use these tools for a variety of purposes, ranging from facilitating internal communication and collaborative work, to supporting information literacy instruction. Advantages and disadvantages of the tools were also identified. This study will help interested librarians gain a concrete understanding of how to benefit from the increasingly popular cloud computing technologies and thus make more informed decisions when migrating to the cloud.