Ahrefs vs Grammarly vs LanguageTool vs ProWritingAid
| Attribute | ||||
|---|---|---|---|---|
| Category | SEO & Search Marketing | Content & Writing | Content & Writing | Content & Writing |
| Pricing | Freemium | Free tier | Free tier | Free tier |
| Starting price | $129 | $12/month | $4.99/month | $10/month |
| Free tier | No | Yes | Yes | Yes |
| Free trial | Yes | Yes (7d) | Yes | Yes |
| Deployment | Cloud | — | — | — |
| API available | Yes | Yes | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | 1 | — | — |
| Integrations | — | — | 2 | — |
| Company | Founded 2010 | Founded 2009 | — | — |
| Feature attributes | ||||
| Sso Saml | ✓ Yes | ✓ Yes | — Unknown | — Unknown |
| Rbac | ✓ Yes | ✓ Yes | — Unknown | — Unknown |
| Mobile App | — Unknown | — Unknown | — Unknown | — Unknown |
| Webhooks | — Unknown | — Unknown | — Unknown | — Unknown |
| Data Export | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Keyword Research | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Backlink Analysis | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Rank Tracking | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Site Audit | ✓ Yes | — Unknown | — Unknown | — Unknown |
| Index Size | — Unknown | — Unknown | — Unknown | — Unknown |
| Ai Generation | — Unknown | ✓ Yes | — Unknown | — Unknown |
| Grammar Check | — Unknown | ✓ Yes | — Unknown | — Unknown |
| Plagiarism Check | — Unknown | ✓ Yes | — Unknown | — Unknown |
| Brand Voice | — Unknown | ✓ Yes | — Unknown | — Unknown |
| Browser Extension | — Unknown | ✓ Yes | — Unknown | — Unknown |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.