CoVariants provides an overview of SARS-CoV-2 variants and mutations that are of interest. The website contains graphs per each country and per variants showing the proportion of total number of sequences (not cases), over time, that fall into defined variant groups. The website also contains a table displaying the amino acid mutations shared by the variants below, and the other defining mutations of these variants. The content, derived data, code used to generate the data, and code that implements this web application can be found on GitHub: github.com/hodcroftlab/covariants.