| Price from | €24/mo | $1/mo |
| Free plan | Yes | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | — |
| Plans published | 8 | 7 |
| Spec score · Programmatic SEO Software | 8.7 (#3) | 8.3 (#6) |
| Spec score · AI Writing Tools | 8.8 (#34) | 8.3 (#99) |
| Brand voice controls | Yes | Projects can be configured with a brand voice that guides generated content style. |
| Free plan | Yes | No |
| Native integrations | 6 | The FAQ lists WordPress, Webflow, Wix, Squarespace, Shopify, and Magento among supported CMS and shop platforms. |
| Languages | Harbor says its multilingual module publishes SEO-optimised content in 52 languages with localisation and hreflang. | The marketing site lists support for more than 50 languages. |
| Product | Harbor is an AI-powered SEO content platform that researches content opportunities, generates articles, publishes them, and tracks rankings. | SEO.AI describes itself as an AI SEO agent that creates ranking content, publishes it to websites, builds relevant backlinks, and works continuously. |
| Security | Harbor states that it encrypts personal data in transit and at rest and uses access controls, least-privilege access, backups, and incident response procedures. | The privacy policy says the service is hosted on AWS and uses firewalls, intrusion detection, encryption at rest and in transit, and access controls; Stripe processes payments with PCI DSS compliance. |
| Support | The about page says a real person usually responds to support requests, often co-founder Hamish, and the Powerhouse plan includes priority support. | The pricing page directs billing questions to [email protected] and says the support team will respond by email. |
