As there are for genes, bioinformatics databases exist for SNPs.
* dbSNP is a SNP database from the National Center for Biotechnology Information (NCBI). , dbSNP listed 149,735,377 SNPs in humans.
* [http://db.systemsbiology.net/kaviar/ Kaviar] is a compendium of SNPs from multiple data sources including dbSNP.
* SNPedia is a wiki-style database supporting personal genome annotation, interpretation and analysis.
* The OMIM database describes the association between polymorphisms and diseases (e.g., gives diseases in text form)
* dbSAP – single amino-acid polymorphism database for protein variation detection
* The Human Gene Mutation Database provides gene mutations causing or associated with human inherited diseases and functional SNPs
* The International HapMap Project, where researchers are identifying Tag SNPs to be able to determine the collection of haplotypes present in each subject.
* GWAS Central allows users to visually interrogate the actual summary-level association data in one or more genome-wide association studies.
The International SNP Map working group mapped the sequence flanking each SNP by alignment to the genomic sequence of large-insert clones in Genebank. These alignments were converted to chromosomal coordinates that is shown in Table 1. This list has greatly increased since, with, for instance, the Kaviar database now listing 162 million single nucleotide variants (SNVs).