Open Medicine Foundation is a nonprofit organization that spearheads research on chronic complex diseases, focusing on myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and Long COVID. They have raised over $40 million to fund research, treatment trials, and healthcare provider education. With a global team of expert scientists and over 50 ongoing studies, they offer diagnostic markers, treatments, and support for poorly understood diseases. Their services include immunology, virology, genomics, informatics, molecular biology, epidemiology, infectious disease, oncology, pathology, and clinical medicine. Open Medicine Foundation is the largest nonprofit effort to cure ME/CFS and related diseases like Long COVID, Fibromyalgia, and Lyme.