Keyword Density Checker
The best 50 Keyword Density Checker AI tools - Free & Paid
Explore 50 AI for Keyword Density Checker
kwrds.ai delivers keyword research with search volume, CPC, competition, and SERP data, plus live People Also Ask and AI‑generated answers for FAQs. It expands seed terms into long‑tail topics, offers historical and country‑specific trends, and provides API access for SEO teams.
Subscription
- $39/mo
Keyword Insights consolidates keyword research from Google, Reddit, Quora, and YouTube. It clusters terms, provides volume, difficulty, CPC, SERP similarity, intent, content‑gap analysis, AI‑generated briefs, and on‑page writing support.
Subscription
- $58/mo
Koala AI produces SEO‑optimized blog posts with research, SERP analysis, and internal linking. It offers editable outlines, bulk creation, schema markup, and one‑click publishing to WordPress, Shopify, Webflow, Ghost, streamlining content workflows for publishers and agencies.
Subscription
- $9/mo
NEURONwriter streamlines content creation by integrating keyword research, competitor analysis, and AI‑generated drafts into one workflow. It builds SEO‑ready articles, automates meta tags, checks plagiarism, and syncs with WordPress, Google Search Console, and Shopify.
Paid
AI Facebook Assistant evaluates domain rank, URL rating, and keyword difficulty, provides backlink database with referring domains, anchor-text distribution, and link velocity, and offers traffic metrics, search/filters and export tools for SEO, content and outreach planning.
- $9.9
Upload a resume and paste a job description to instantly score fit. The tool spotlights missing keywords, allows in‑platform edits, and generates tailored cover letters and summaries. A Kanban board tracks applications, and a Chrome extension saves listings—no sign‑up required.
Freemium
Keywords.ai is an AI-powered SEO tool that generates relevant keywords and topics using GPT-3.5-based AI engines, providing data on search volume and keyword difficulty for informed decision making.
Subscription
- $19
AI writing tools and resources that provide a content generator powered by GPT-3, business idea generator, Facebook Ads Generator, Magic Paragraph Generator, and SEO tool to optimize content for better search engine rankings.
Free trial
- $19/mo
Quetext is an all‑in‑one writing platform offering plagiarism detection, AI content detection, real‑time grammar and spell correction, summarization, paraphrasing, and citation generation. It supports PDF, DOC, TXT files with bulk uploads for students, teachers, researchers, and creators.
Freemium
- $8/mo
This AI tool is a free online writing assistant with advanced features to enhance writing skills and prevent plagiarism.
Freemium
Marketing Tool aggregates free utilities for marketing and web performance. It offers keyword research, backlink and SEO audits, social media scheduling, hashtag generation, ad‑budget calculators, speed testing, image compression, plagiarism checks, URL shortener, QR code. No registration required.
Free
Word Spinner is an AI‑powered writing assistant that improves tone, flow, and readability for blog posts, emails, ads, and web copy. It offers grammar checks, tone analysis, and a Chrome extension supporting 100+ languages.
Subscription
- $29/mo
vidIQ delivers real‑time YouTube analytics, keyword research, AI‑powered thumbnail creation, and competitive insights. Its AI coach refines titles and descriptions, while clipping tools produce short videos. Available via Chrome or mobile, it boosts visibility and engagement for creators.
Subscription
- $31/mo
Originality.ai evaluates text for AI generation, plagiarism, factual accuracy, readability, grammar, and SEO. The Chrome extension and web app enable on‑page checks, bulk scanning, PDF uploads, and API integration for writers and editors.
Free trial
- $12.95/mo
KeywordSpy analyzes Google’s ranking signals (Neural Matching, RankBrain, BERT, etc.) to provide real‑time keyword, title, meta, and HTML recommendations. It offers AI‑driven content outlines, plagiarism checks, rewrite tools, and project tracking for on‑page optimization.
Subscription
- $74/mo
Denser.ai is a code‑free platform that lets users build website chatbots and semantic search tools. It indexes PDFs, documents, and webpages, supports retrieval‑augmented generation, database querying, 24/7 support, automated lead capture, and detailed chat analytics.
Freemium
- $29/mo
KWatch.io tracks real‑time mentions across X, LinkedIn, Facebook, YouTube, Reddit, and Hacker News, alerting via email, Slack, or API when keywords appear. It uses AI to assess sentiment and organizes results for monitoring, support, and intelligence.
Freemium
LanguageTool is an AI grammar, spelling, and style checker supporting 30+ languages. It offers real‑time browser extensions, desktop and Word add‑ins, advanced Picky Mode, paraphrasing, and an API for developer integration.
Free
Ranklytics is an AI-driven SEO tool for content planning, keyword research, and website audits. It automates content creation, provides competitor analysis, and supports over 58 languages, streamlining the publishing process directly to WordPress.
Free trial
- $49/mo
NeuralText aids creators and marketers in generating, researching, and optimizing content. It clusters keywords, analyzes SERPs, offers AI writing tools, and connects to Google Search Console for performance insights, supporting multiple languages.
Subscription
- $19/mo
QuillBot is a writing and editing tool offering features such as paraphrasing, grammar and plagiarism checks, citation generation, and content creation assistance, all accessible through a Chrome extension or online platform.
Freemium
- $33/mo
diib automatically scans websites for keyword rankings, backlink health, and technical metrics such as speed, security, and Core Web Vitals. It delivers a daily health score, competitor alerts, social media insights, and actionable on‑page SEO recommendations, with custom growth dashboards.
Freemium
- $44.99/mo
AI Text Generator creates original drafts, blog posts, emails, reports, and social captions from prompts, keywords or source text. Browser-based, it lets users set length, tone and audience, refine outputs, and copy or download results.
Freemium
Check Typo is an AI‑powered spell‑checker extension that integrates into web forms, Gmail, LinkedIn, and social media drafts, supporting 100+ languages and preserving tone while providing real‑time corrections for students, professionals, and writers.
Free
iAsk.Ai delivers instant, factual answers to natural‑language questions from authoritative web sources, and offers essay drafting, advanced grammar checks, academic summarization, PDF analysis, image generation, URL bullet‑point briefs, and one‑click grammar correction. Accessible via browser extens
Freemium
- $9.95/mo
TextAdviser delivers AI‑powered language tools: grammar checking, plagiarism detection, syntactic analysis, fast text generation, rewriting, tone humanization, summarization, and name/title creation. It supports English, Spanish, Portuguese, Italian, French, and German for writers, students, markete
Free
Surfer is an SEO content platform that offers real‑time analysis of article structure, keyword density, and images in multiple languages. It supplies an editor with on‑page recommendations, AI‑driven drafting, link insertion, authenticity checks, and brand visibility tracking.
Subscription
- $49/mo
Linguix is a writing tool that offers free grammar check, analyzes team performance over-time, can be accessed through various platforms, and has a clean and modern UI.
Freemium
- $99
Writesonic AI Visibility tracks brand rankings across ChatGPT, Gemini, Perplexity, and 10+ AI platforms, delivering scores, sentiment, and citation data. Its action center recommends outreach, SEO fixes, and AI‑optimized content, while 120M conversation insights guide topic selection.
Free
AISEO Free paraphrasing tool for content with high uniqueness
Free trial
On‑Page analyzes pages with Google ranking signals, scoring title relevance, intent, freshness, authority, and visual impact. AI Optimizer suggests entity‑based keyword tweaks; Auto‑Optimizer adds related entities; link‑relevancy tools flag irrelevant backlinks, predictive guest‑post evaluation occu
Subscription
- $129/mo
KeywordSearch analyzes business data to pinpoint high‑performing keywords and build targeted Google/YouTube ad audiences instantly. It expands keyword sets, offers competitor insights, and lets users generate video titles, tags, and descriptions for better discoverability.
Paid
- $97/mo
AI‑powered platform generating SEO‑optimized articles, product roundups, and affiliate reviews in up to 48 languages. It analyzes competitors, suggests keyword placement, supports bulk production, auto‑publishes to WordPress, creates product listings from URLs, and supplies contextual images with SE
Subscription
- $14/mo
TopicMojo aggregates data from 50+ sources, producing models, keyword insights, and user questions. Its Social Model maps conversations on Reddit, Twitter, Instagram, etc., while Question Finder and Search Listener uncover common queries and new searches. SEO metrics guide ranking potential.
Freemium
GPTZero AI Detector scans documents for potential AI-generated content, providing in-depth results on AI probabilities, vocabulary analysis, and hallucination detection, as well as plagiarism checking and authorship verification capabilities.
Freemium
- $12/mo
Nightwatch is an AI-powered SEO monitoring tool that offers rank tracking, automated reporting, site audits, and resource optimization. It provides detailed insights on global search engine rankings and allows teams to identify growth opportunities through data-driven decision making.
Free trial
TextGears is a grammar and spell checker with an API for automated proofreading, readability scoring, and text analysis. It supports multiple languages and offers both cloud-based and self-hosted deployment for integration into various business workflows.
Subscription
SEO Content AI automates keyword‑optimized long‑form content creation, supports multiple languages, builds content clusters, and suggests internal links. It imports keywords for hands‑off research, adds local business URLs for localized SEO, and includes grammar and plagiarism checks.
Freemium
- $24/mo
Wordvice AI provides real‑time grammar checking, paraphrasing, translation, summarization, plagiarism and AI‑content detection, plus citation generation across multiple languages. It integrates with Chrome and Word, supporting students, researchers, professionals, teams, and offers on‑demand human e
Freemium
- $8.45/mo
Keyword Catcher analyzes Google SERPs automatically, providing keyword research, rank tracking, and AI‑generated content outlines. It delivers search volume, competition, page metrics, and long‑tail suggestions, storing reports for ongoing strategy development.
Subscription
- $15/mo
An AI paraphrasing tool that rewords up to 125 words per input with unlimited use. Offers ten modes, a synonym slider, AI thesaurus, export options, originality detection, browser extensions, and multilingual support for students, researchers, and professionals.
Subscription
Web‑based grammar checker supporting 27 languages—including Tagalog and English variants—highlights spelling, grammar, punctuation errors and offers corrections. It accepts rich text up to 15,000 characters, detects GPT‑style typos, and includes an AI content detector, usable from any browser.
Free
ATSFriendly.com scans a resume against a job posting, identifies missing skills and redundant content, and delivers a line‑by‑line report with an ATS‑friendly score. It offers keyword suggestions, editable feedback, and exports a clean PDF.
Subscription
- $7.99/mo