Best SEO Tools in 2026 — page 6

Slim SEO

ZentroSEO

ZentroSEO brings research, audits, monitoring, content help, and white-label functions together in a browser platform.

WhatKeywords

WhatKeywords brings keyword discovery, rank tracking, saved searches, and client reporting into one web service.

KeywordResearch.Pro

KeywordResearch.Pro combines broad keyword research coverage with local processing and downloadable results.

KWResearch.io

KWResearch.io lists a broad free keyword-research plan, but its domain currently leads to a sale page rather than the service.

KeywordsDB

KeywordsDB focuses on large-scale keyword discovery with filtering, historical trends and optional exports.

Siteliner

Choose Siteliner for website scans focused on internal duplicate content, broken links, and page prominence, with downloadable reports and an XML sitemap.

Keyword Sheeter

Keyword Sheeter combines broad idea generation with planning, metrics, SERP data, and API access.

Sitebulb

Sitebulb focuses on auditing websites and researching keywords, with plan limits that scale from 10,000 to 10 million URLs.

SEOTool

Local SEO Scout

Local SEO Scout focuses on visible Google Maps results, snapshots, and practical reports rather than exhaustive SEO analysis.

Rank Maxer

Rank Maxer focuses on technical accessibility, page checks, and performance signals rather than search research or ranking features.

CrawlCenter

CrawlCenter brings a broad set of on-page checks into crawl reports and includes a free plan. Check its JavaScript and redirect limitations against the sites you need to analyze.

CrawlRhino

CrawlRhino groups several practical SEO tasks into separate Windows tools, with free limits for crawling and monitoring.

SEO Review Tools Backlink Checker

SEOWrench

SEOWrench focuses specifically on site-audit capacity rather than a broad SEO feature set. The free, Pro and Agency tiers differ mainly in domains, analyses, pages and AI credits.

SerpTrace

SerpTrace offers on-demand, location-specific rank checks with retained history and a free plan.

QueryLantern

Google Trends

Crowl

Crowl offers broad crawl controls and open-source flexibility without a subscription cost.

Keyword.io

Choose Keyword.io for free autocomplete suggestions from a wide range of platforms, with keyword lists and export options.

Schema

Schema automates structured data output for WordPress content, with a Premium edition for more targeted schema setup.

Google Rich Results Test

Choose Google Rich Results Test for a free, anonymous check of structured data and possible rich result eligibility.

Sitechecker

Sitechecker groups several SEO capabilities into four plans with distinct stated audiences and allowances.

Wincher

Wincher combines search research, ranking tools and reporting in one platform, with plan options from 500 keywords upward.