The best SEO tools

I scored each tool on four weighted criteria: keyword and ranking data (30%), content optimisation (30%), site audit (20%) and price (20%). Features were verified against each vendor's own pricing and product pages on 13 June 2026. Surfer's pricing page geolocated to euros and is a client-rendered page, so I could not verify a US-dollar figure to a primary source this turn and left its starting price out rather than convert or guess it; its tiers and features were read from the rendered page. Ahrefs, Semrush and Clearscope prices are the published monthly US-dollar rates, with annual billing cheaper. I disclose that Surfer is the one tool here I have an affiliate relationship with, and it never moved the ranking; the other three are independent reference picks with no affiliate link.

[{"key": "keyword_data", "label": "Keyword & ranking data", "weight": 0.30}, {"key": "content_optimisation", "label": "Content optimisation", "weight": 0.30}, {"key": "site_audit", "label": "Site audit", "weight": 0.20}, {"key": "price", "label": "Price", "weight": 0.20}]