The Actinobacteriophage database, more commonly known as PhagesDB, is a bioinformatics website that collects and shares information related to the discovery, characterization, and genomics of viruses that typically infect Actinobacteria. At the start of 2026, the database contained information on more than 30,000 bacteriophages (phages), as well as over 5,000 fully sequenced phages.
PhagesDB has individual entries for each different virus in the database, along with a separate GeneMark page, as well as amino-acid information about phage genomes. The table below indicates the different types (by bacterial host genus) and numbers of phages sequenced:
Information published in this database can be freely viewed by anyone, and an Application Programming Interface (API) is available. PhagesDB keeps some unpublished data, including newly performed genomic sequences.