The Strong2020 and Radio MonteCarLow activities.

In the past 15 years, the Radio MontCarLow WG ("Radiative Corrections and Monte Carlo Generators for Low Energies" Working Group) supported the development of radiative corrections and Monte Carlo generators for low-energy $e^{+}e^{-}$ data and tau-lepton decays. This group has been facilitating communication between theorists and experimentalists, which leads to the report $Quest$ for precision in hadronic cross sections at low energy: Monte Carlo tools vs. experimental $data$ by Actis $et al.$ that has more than 300 citations. Parts of the Radio MonteCarLow WG program were recently included in the European hadron physics community group application, Strong2020, with the goal of producing an annotated database for low-energy hadronic cross-sections in $e^{+}e^{-}$ collisions. These efforts have also been revived by the measurement of the muon anomalous magnetic moment at Fermilab that differs by $4.2\sigma$ from the Standard Model prediction when combined with the previous result from the Brookhaven experiment. We will report on these Radio MonteCarLow and Strong2020 activities.