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100% Permanent Free Plan List

Best Free Keyword Research Tools (2026)

Get high-performance Keyword Research features completely free. We review and rank tools that offer permanent free subscription tiers.

Vetted Permanent Free Software

Found 14 free tools

Om

Omni Rank Flow

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated omni rank flow operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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Si

SitePro Pro

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated sitepro pro operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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In

IndexFlow Pro

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated indexflow pro operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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To

TopicalAudit

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated topicalaudit operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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Ke

KeywordSpider Pro

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated keywordspider pro operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

Read Review Start Free

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Smart Rank Analyzer

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated smart rank analyzer operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

Read Review Start Free

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Smart Keyword Tracker

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated smart keyword tracker operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

Read Review Start Free

Br

Bright Link Analyzer

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated bright link analyzer operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

Read Review Start Free

Br

Bright SERP Tracker

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated bright serp tracker operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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De

DeepRank

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated deeprank operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

Read Review Start Free

In

IndexTracker Pro

A premium MarTech analytics gateway fully optimized for custom B2B campaign workflows.

Automated indextracker pro operational workflowsIntelligent campaigns telemetry analytics

🎁 Free Tier Advantage: Free forever tier with core functionality

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DO

DomainScope

A next-generation platform for keyword research optimized for high-velocity marketing pipelines.

Keyword ResearchReal-time Rank Tracking & Position IndexingOn-page Technical SEO Crawler Engine

🎁 Free Tier Advantage: Free forever tier with core functionality

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RA

Rankscope

A next-generation platform for keyword research optimized for high-velocity marketing pipelines.

Keyword ResearchReal-time Rank Tracking & Position IndexingOn-page Technical SEO Crawler Engine

🎁 Free Tier Advantage: Real-time Rank Tracking & Position Indexing

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LI

Linkcheck

A next-generation platform for keyword research optimized for high-velocity marketing pipelines.

Keyword ResearchReal-time Rank Tracking & Position IndexingLocalized Geo-targeted Search Telemetry

🎁 Free Tier Advantage: Real-time Rank Tracking & Position Indexing

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Important: Limitations of Free Plan Software

Free subscription options are outstanding for bootstrapping creators and startups to validate products. However, keep in mind that free tiers typically feature strict caps on monthly volume limits (such as email send limits or monthly analytics visitor counts). When your business scales, upgrading to paid plans ensures you have full developer API keys, advanced custom reporting worksheets, and SLA priority support.