Mortality Watch

"Mortality Watch aggregates mortality data from multiple sources to generate daily updated mortality charts. Select from many jurisdiction's and different chart types. The underlying dataset is now the largest and most detailed on the web. Data and calculations (R language) are open source available on GitHub. Crude mortality rate (CMR) is deaths per one hundred-thousand residents. Age Standardized Mortality Rate (ASMR) is calculated using the WHO2015, ESP2013, US2000 Standard Population and each jurisdictions 2020 age table." (source)

About the data: https://mortality.org/Data/STMF 

Methodological note: https://mortality.org/File/GetDocument/Public/STMF/DOC/STMFNote.pdf