Over the past few years, the Scaled Agile Framework (SAFe) has been adopted by a large number of organizations to scale agile to large enterprises. At the moment, SAFe seems to be the most predominant agile scaling framework. Despite the current popularity of SAFe in the software intensive industry, there exists surprisingly little scientific research on the benefits and challenges of SAFe adoption. To collect the existing knowledge on this topic, we conducted a multivocal literature review, which includes both peer-reviewed and non-peer reviewed case studies and experience reports on organizations that have adopted SAFe. We identified 52 unique organisations adopting SAFe, five from the scientific literature and 47 from the grey literature.