Sirepo development has been supported by the U.S. Department of Energy Office of Science under multiple awards: By the office of High Energy Physics under Award Nos. DE-SC0011340, DE-SC0015897, and DE-SC0018719. By the office of Basic Energy Sciences under Award Nos. DE-SC0011237, DE-SC0015209, DE-SC0018556, and DE-SC0018571. By the office of Nuclear Physics under Award Nos. DE-SC0015212 and DE-SC0017181. By the office of Advanced Scientific Computing Research under Award Nos. DE-SC0017162 and DE-SC0017057. Sirepo has also been funded in part with Federal funds from the National Cancer Institute, National Institutes of Health, Department of Health and Human Services, under Contract No. 75N91019C00053 and with partial support from RadiaSoft LLC and from Sirepo customers.