In the last fifteen years we have witnessed a vast spread of new methods for managing projects within software development. In 2001, the Agile Manifesto stated the common values and principles of these methods, all aimed at producing better software. Several of these values and principals are specifically expressed for designing and programming software products. Since then, the benefits of these methods have led to a widespread use of agile project management even in non-software development contexts. But, how does these values and principals affect projects in non-software areas since some values and principals are not applicable? Do they perceive the same benefits? This paper presents a systematic literature review aimed at identifying benefits in projects adopting agile methods in non-software development contexts. Out of the 21 case studies analysed, most reported projects were from manufacturing companies but even from areas such as library management and strategy management. The most frequently reported benefits were related to team work, customer interaction, productivity and flexibility. The main parts of the benefits were corresponding to the first value in the Agile Manifesto: Individuals and interactions over processes and tools.