SILVA is a comprehensive, quality-controlled web resource for up-to-date aligned ribosomal RNA (rRNA) gene sequences from the Bacteria, Archaea and Eukaryota domains alongside supplementary online services. In addition to data products, SILVA provides various online tools such as alignment and classification, phylogenetic tree calculation and viewer, probe/primer matching, and an amplicon analysis pipeline. With every full release a curated guide tree is provided that contains the latest taxonomy and nomenclature based on multiple references. SILVA is an ELIXIR Core Data Resource.
SILVA is one of the ELIXIR Core Data Resources.
As of release 138 the SILVA databases, its taxonomy, and all files provided for download are licensed unter Opens external link in new windowCreate Commons Attribution 4.0 (CC-BY 4.0). All data is freely available for academic and commercial use as long as SILVA is credited as original author and a link to the full license is provided.
Releases before SILVA 138 are not affected by the new license. Please refer to the license file provided in each download directory for the license associated with the provided files.