Alternatives to OpenSEO
OpenSEO These options were selected to replace all or part of OpenSEO’s workflow. Compare their purpose, limitations and free-plan terms: freemium does not mean entirely free.
Freemium

Semrush · semrush.com
SEO suite: keywords, competitors and site audits.
Keep in mind: Free account limited to 10 requests a day
Freemium
Ubersuggest · neilpatel.com
Neil Patel's SEO tool: keywords, search volumes, site audit and competitor analysis.
Keep in mind: 3 free searches a day
FreemiumBrowser extensionFrench
Paid or pricing to confirm

Ahrefs · ahrefs.com
Benchmark SEO suite: backlinks, keywords, competitor analysis and site audit.
Keep in mind: Very expensive
PaidAI