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 * [**SARS-CoV-2 lineages**](https://cov-lineages.org/) is "dynamic nomenclature proposal for SARS-CoV-2 lineages to assist genomic epidemiology" and the site also contains links to a number of tools including [the web application version of PANGOLIN](https://pangolin.cog-uk.io/)
 * [**CoVariants**](https://covariants.org/) contains information about mutations and the variants they are found in, with both textual descriptions of their origin, characteristics and relevant concerns, and graphs showing how frequently they were sequenced in various countries, as well as dedicated Nextstrain builds maintained by Emma Hodcroft
 * [**outbreak.info Mutation Reports**](https://outbreak.info/situation-reports) lists variants of concern and variants of interest while highlighting their main characteristics in a compact format as well as more articulated reports showing their prevalence in time and regions, and [location reports](https://outbreak.info/location-reports) where the variants situation in a specified country or region is presented
+* [**Cov2Tree**](https://cov2tree.org/), "interactive SARS-CoV-2 phylogeny", offers access to more than one million public SARS-COV-2 sequences, in the form of a zoomable and seearchable tree, with mutation annotations for each sequence; powered by [Taxodium](https://github.com/theosanderson/taxodium)
 * [COVIDCG](https://covidcg.org/) is a genetics browser was designed to empower diverse projects on SARS-CoV-2 transmission, evolution, emergence, immune interactions, diagnostics, therapeutics, vaccines, and tracking of interventions.
 * [Sanger COVID–19 Genomic Surveillance](https://covid19.sanger.ac.uk/lineages/raw) models sequenced variants in England, with an attempt to select them so as to obtain something akin to random sampling
 * [Official hCoV-19 Reference Sequence](https://www.gisaid.org/epiflu-applications/hcov-19-reference-sequence/) and [Genomic epidemiology of hCoV-19](https://www.gisaid.org/epiflu-applications/phylodynamics/) at [GISAID](https://www.gisaid.org/), which offers many other COVID-19 resources such as its [Mutation Surveillance Dashboard](https://www.gisaid.org/hcov19-mutation-dashboard/)