Anubis is an open-source web firewall utility that protects websites and their upstream resources from scraper bots. It places one or more challenges in front of requests, which the software uses to weigh the connection before access is granted. The code is published on GitHub under the MIT licence and is run by the operator of the website on its own infrastructure.
The maintainer, Techaro, presents Anubis on its website as made in Canada and names no separate legal entity or parent company. Because the software is released under an open-source licence, an operator can inspect the code and run it without a vendor cloud service. For a European organisation this means the software itself has no US or other foreign parent named, although the maintainer's support and governance should be assessed separately. Anubis is a self-hosted component rather than a hosted captcha service.