| ICTV home page | The International Committee on Taxonomy of Viruses |
| ICTV Taxoprops | ICTV Taxonomic Proposals |
| ICTVdB | The Universal Virus Database of the International Committee on Taxonomy of Viruses |
| Virus Taxonomy On-line | ICTV Seventh Report |
| IAH Virus Pages | Institute for Animal Health, UK. |
| Picornaviridae.com | The home of picornaviruses |
| EUROPIC | European Study Group on the Molecular Biology of Picornaviruses |