# 12 SEO Tester Online alternatives in 2026

Last updated: November 9, 2026.

The best alternatives to SEO Tester Online for backlink APIs: DataForSEO, BacklinkMCP and SE Ranking, by our benchmark. SEO Tester Online's website is seotesteronline.com.

## Backlink API alternatives

[DataForSEO](https://datacircle.dev/backlink-apis/dataforseo/free#top-up-from-50), [BacklinkMCP](https://datacircle.dev/backlink-apis/backlinkmcp/free#19-monthly) and [SE Ranking](https://datacircle.dev/backlink-apis/se-ranking/free-trial-get-v1-backlinks-raw#29-monthly-add-on-monthly-billing-get-v1-backlinks-raw) are the best [backlink API providers](https://datacircle.dev/best-backlink-api) in the Datacircle benchmark.

On our [SEO Tester Online plan pages](https://datacircle.dev/backlink-apis/seo-tester-online/contact-us), we compare each SEO Tester Online plan with other providers' plans. We list other providers' plans below.

- [Dataprovider.com, contact us, API, GET /links/incoming/anchor-texts](https://datacircle.dev/backlink-apis/dataprovider-com/contact-us-api-get-links-incoming-anchor-texts): no price per 1,000 backlinks
- [Morningscore, contact us](https://datacircle.dev/backlink-apis/morningscore/69-monthly#contact-us): no price per 1,000 backlinks
- [SEObserver, contact us, API subscription, GET /backlinks/anchors.json](https://datacircle.dev/backlink-apis/seobserver/contact-us-api-subscription-get-backlinks-anchors-json): no price per 1,000 backlinks
- [VerifiedDR, contact us](https://datacircle.dev/backlink-apis/verifieddr/free#contact-us): no price per 1,000 backlinks

Compare every backlink API plan: [Backlink API pricing: free and cheapest plans compared](https://datacircle.dev/backlink-api-pricing)

## Domain authority API alternatives

[BacklinkMCP](https://datacircle.dev/domain-authority-apis/backlinkmcp/free#19-monthly), [Tranco](https://datacircle.dev/domain-authority-apis/tranco/free) and [SE Ranking](https://datacircle.dev/domain-authority-apis/se-ranking/free-trial-get-v1-backlinks-authority-domain#29-monthly-add-on-monthly-billing-get-v1-backlinks-authority-domain) are the best [domain authority API providers](https://datacircle.dev/best-domain-authority-api) in the Datacircle benchmark.

On our [SEO Tester Online plan pages](https://datacircle.dev/domain-authority-apis/seo-tester-online/contact-us), we compare each SEO Tester Online plan with other providers' plans. We list other providers' plans below.

- [DR Checker, contact us, Custom Plan, GET /api/dr-checker](https://datacircle.dev/domain-authority-apis/dr-checker/15-monthly-pro-get-api-dr-checker#contact-us-custom-plan-get-api-dr-checker): no price per 1,000 domains
- [DataForSEO, contact us, Custom pricing quote, POST /v3/backlinks/bulk_ranks/live](https://datacircle.dev/domain-authority-apis/dataforseo/free-1-trial-credit-post-v3-backlinks-bulk-ranks-live#contact-us-custom-pricing-quote-post-v3-backlinks-bulk-ranks-live): no price per 1,000 domains
- [RankParse, contact us, 1M credits or more, GET /v1/domain-rank](https://datacircle.dev/domain-authority-apis/rankparse/free-get-v1-domain-rank#contact-us-1m-credits-or-more-get-v1-domain-rank): no price per 1,000 domains
- [SE Ranking, contact us, Enterprise, GET /v1/backlinks/authority/domain](https://datacircle.dev/domain-authority-apis/se-ranking/free-trial-get-v1-backlinks-authority-domain#contact-us-enterprise-get-v1-backlinks-authority-domain): no price per 1,000 domains
- [SEOkicks, contact us](https://datacircle.dev/domain-authority-apis/seokicks/contact-us): no price per 1,000 domains

Compare every domain authority API plan: [Domain authority API pricing: free and cheapest plans compared](https://datacircle.dev/domain-authority-api-pricing)

## Keyword research API alternatives

[DataForSEO](https://datacircle.dev/keyword-research-apis/dataforseo/free-1-trial-credit-post-v3-dataforseo-labs-google-keyword-overview-live#top-up-from-50-pay-as-you-go-post-v3-dataforseo-labs-google-keyword-overview-live), [AppDrift](https://datacircle.dev/keyword-research-apis/appdrift/14-99-monthly) and [Bing Webmaster Tools](https://datacircle.dev/keyword-research-apis/bing-webmaster-tools/free-get-webmaster-api-svc-json-getkeywordstats) are the best [keyword research API providers](https://datacircle.dev/best-keyword-research-api) in the Datacircle benchmark.

On our [SEO Tester Online plan pages](https://datacircle.dev/keyword-research-apis/seo-tester-online/contact-us), we compare each SEO Tester Online plan with other providers' plans. We list other providers' plans below.

- [APIHZ, contact us](https://datacircle.dev/keyword-research-apis/apihz/free#contact-us): no price per 1,000 keywords
- [Glimpse, contact us, API access, GET /v1/interest](https://datacircle.dev/keyword-research-apis/glimpse/contact-us-api-access-get-v1-interest): no price per 1,000 keywords
- [UnifAPI, contact us, Enterprise, POST /geo/keywords/search-volume](https://datacircle.dev/keyword-research-apis/unifapi/top-up-pay-as-you-go-post-geo-keywords-search-volume#contact-us-enterprise-post-geo-keywords-search-volume): no price per 1,000 keywords
- [VerifiedDR, contact us](https://datacircle.dev/keyword-research-apis/verifieddr/39-monthly#contact-us): no price per 1,000 keywords

Compare every keyword research API plan: [Keyword research API pricing: free and cheapest plans compared](https://datacircle.dev/keyword-research-api-pricing)

## See also

- [Dataprovider.com alternatives](https://datacircle.dev/dataprovider-com-alternatives)
- [Morningscore alternatives](https://datacircle.dev/morningscore-alternatives)
- [SEObserver alternatives](https://datacircle.dev/seobserver-alternatives)
- [VerifiedDR alternatives](https://datacircle.dev/verifieddr-alternatives)
- [DR Checker alternatives](https://datacircle.dev/dr-checker-alternatives)
- [DataForSEO alternatives](https://datacircle.dev/dataforseo-alternatives)
- [RankParse alternatives](https://datacircle.dev/rankparse-alternatives)
- [SE Ranking alternatives](https://datacircle.dev/se-ranking-alternatives)