This URL leads to a page that lists companies offering DNA testing services:
According to the site, "This is a list of DNA testing companies offering direct-to-consumer (DTC) DNA tests for genealogy, deep ancestry and biogeographical ancestry. This list is provided for information only. Inclusion on this list does not imply recommendation or endorsement by ISOGG. ISOGG welcomes additions and corrections to this list. Please contact us with the appropriate details."