19.0
DefiniteSEO combines a WordPress SEO plugin with online tools for audits, AI visibility, backlinks, and AI writing.
Free planOpen sourceAndroidiOSWeb
Best SEO Tools in 2026
DefiniteSEO leads this chart of 245 (9.0/10, free plan). Marketing Miner is next (8.8/10, free plan), and Rank Math SEO is the next highest-placed with a free plan (8.7/10). SEO platforms can support keyword discovery, ranking checks, site reviews and backlink analysis. Weigh those capabilities against cost and the platforms each tool supports. If you want to check or manage SEO from a Xiaomi, Redmi or POCO device, confirm whether a tool has an Android app and what it covers. The platform details here list web, API, desktop and self-hosted options, but do not specify Android apps.
28.8
Marketing Miner is a web and API platform for search, website visibility, and AI assistant data.
Free planAndroidiOSWeb
38.7
Rank Math SEO combines keyword research, position monitoring and site checks for web and self-hosted use.
Free planOpen sourceWebAPISelf-hosted
- 4
Yoast SEO
WordPress SEO plugin with a free plan and a paid option.
Free planOpen sourceWebAPISelf-hosted8.7From $118.80 a year - 5
Screaming Frog SEO Spider
Screaming Frog SEO Spider is a website crawler for technical SEO audits, with tools to find issues that may affect search visibility and user experience.
Free planAPILinuxmacOSSelf-hosted8.6Free plan - 6
SEO PowerSuite
SEO PowerSuite is a freemium SEO software suite from a maker founded in 2004 and headquartered in Nicosia, Cyprus.
Free planAPILinuxmacOSWindows8.5From $349 a year - 7
8.4From $29 a month - 8
Frase
Frase combines SEO research, content optimization and GEO scoring to help teams work on search rankings and AI citations.
Free planWebAPIExtension8.4From $19 a month - 9
Mangools
Free planWebAPIExtension8.3From $29.90 a month - 10
Screaming Frog SEO Log File Analyser
Analyze website log files on Windows, macOS or Linux; a free plan is offered.
Free planLinuxmacOSWindows8.3From $139 a year - 11
Positionly
Positionly is inbound marketing software for tracking keyword positions and improving search visibility.
Free planAndroidiOSWebAPI8.3From $15 a month - 12
Sitebulb
A Windows and Mac app, browser extension and web tool with a 14-day trial.
WebExtensionmacOSWindows8.2 - 13
WebCrawler Pro
WebCrawler Pro crawls websites and scores pages for technical SEO, answer-engine readiness (AEO), and generative engine optimization (GEO).
Free planWebLinuxmacOSSelf-hosted8.2$1 usage-based - 14
Semrush
Semrush provides keyword discovery and search-position tracking, plus a free plan.
Free planAPI8.1From $10 a month - 15
Sitechecker
Sitechecker is a paid SEO platform from a maker headquartered in Gibraltar.
WebAPIExtension7.9From $83 a month - 16
SpiderNow
SpiderNow is a website crawler that extracts site data and performs real-time technical audits.
Free planAndroidiOSWebAPI7.9From $6.99 a month - 17
Keyword Revealer
Keyword Revealer is a web platform for SEO and Answer Engine Optimization.
Free planWeb7.8From $19 a month - 18
KrawlOps
Free planAndroidiOSWebExtension7.8From $29 a month - 19
AccuRanker
WebAPI7.7From $224 a month - 20
Keyword Tool
Keyword Tool offers keyword and competitor research, plus a free plan and API access.
Free planWebAPI7.7From $68 a month - 21
Linkody
Linkody is a backlink monitoring and link-building campaign tool for tracking a site's own domains and competitors.
WebAPI7.7 - 22
SEOcluster.ai
SEOcluster.ai is a web-based SEO tool for keyword research, site audits, and competitor research.
Free planWeb7.7From $29 a month - 23
Crawlr
Crawlr is a website crawler and technical SEO audit tool for finding technical issues, crawl inefficiencies, and site architecture problems.
Free planWebAPI7.7From $8 a month - 24
7.6From $29 a month - 25
Netpeak Spider
Desktop SEO software for Windows and macOS; includes a free option and a three-day trial.
Free planmacOSWindows7.6Free plan
Choosing well
Which SEO research features do I need?
Decide which SEO tasks matter most to you. The list compares tools for keyword research, position monitoring, site auditing, backlink analysis and competitor research.
If you need several of these in one workflow, compare tools across the features rather than choosing by name alone.
Can I use an SEO tool on Android?
Check the tool’s platform details for Android coverage before relying on it from a Xiaomi, Redmi or POCO phone or tablet.
How should I compare free plans and trials?
See if a no-cost plan includes the work you need; where listed, weigh that against the entry price of paid plans. The list’s comparisons include free plan and paid-from details.
A trial and a continuing free plan are different things. Confirm the terms for the tool you are considering.
How many keywords can I track?
Compare tracked-keyword details if ongoing rank tracking is part of your work. The available facts identify tracked keywords as a comparison point, but do not give specific limits for the named tools.
Also check whether rank tracking itself is included in the plan you intend to use.
Do I need API access or self-hosting?
An API may be useful when SEO tasks need to exchange data with other software. Self-hosting may be relevant if you need to run a tool in your own environment.
Check those options directly for the tool and plan you are considering; the platform categories alone do not describe their terms.
Questions people ask
What should I compare when choosing SEO software?
Assess the tools’ keyword and competitor research, rank monitoring, site audits, backlink analysis and API availability, along with tracked-keyword allowances, prices and supported platforms.
Can I use SEO tools on a Xiaomi phone?
The listed platform details do not specify Android apps. Check the tool’s Android support and what it covers before choosing it for phone use.
Are there free SEO tools?
The comparison indicates which tools offer a no-cost plan. Review its features and restrictions to see if it fits your needs.
What is the difference between a free plan and a free trial?
One is a free plan; the other grants access for a limited trial period. Review the tool’s terms for availability and duration.
Which SEO tools support API access?
API availability is among the list’s comparison fields. Review each product’s details for access and any plan conditions.