Anubis

Anubis acts as a web‑level firewall that examines incoming HTTP requests with one or more challenge mechanisms, aiming to distinguish human users from automated scraper bots. By weighing each connection, it blocks or limits traffic that matches patterns typical of large‑scale AI‑driven scraping, thereby shielding upstream services from unwanted load.

The utility is self‑hostable and released under the MIT license, offering a free‑tier, non‑subscription model that can be deployed on any compatible server. Its lightweight design targets small‑scale sites and community‑focused projects that need a low‑cost barrier against aggressive crawlers while remaining open‑source and libre.

Anubis is positioned as a defensive layer for web resources, providing a straightforward way to filter out malicious or excessive automated traffic without relying on external services. Its focus on simplicity and minimal overhead makes it suitable for operators who want direct control over bot mitigation.