Keyword research tools show which phrases people search, how often, and how hard it is to rank for them. Some mine autocomplete, some read the live results page, and suites bundle both with rank tracking and links.
Many meter use by credits or daily requests. This guide ranks eleven on setup effort, real price, exit and independence.
Vendors can pay for more visibility on this website, for example a higher place in a ranking or more room on a page. Commercial relationships can also affect which products we feature and how prominently. Every vendor link is marked the same, whatever the arrangement behind it. How that works.
In short
What keyword research tools software does
Keyword research tools collect search phrases, estimate monthly volume, cost per click and ranking difficulty, and group related terms so writers and advertisers can choose which topics to target.
To rank keyword research tools we asked, in turn, how much work setup takes, what it truly costs, whether data can be taken back out, whether leaving is possible, and who the product suits. The ranking then gives places 1 to 3 to challengers outside the best-known brands, if the category has such vendors, and the incumbents follow. The reasoning behind the five tests, and behind having no score out of ten, is set out on the how we work page.
Wildcard keyword search with bulk SERP checks aimed at niche publishers
Ranked #1 of 11 in Best Keyword Research Tools in 2026.
Pricing on requestNorth America
Keyword Chef works from wildcard patterns. A phrase such as best-of with a gap in the middle returns clusters, and each report is saved and can be shared publicly. Country targeting applies to keywords, volume and results, and a bulk SERP analyser highlights forums.
Custom keyword lists can be uploaded for volume and results checks. Two credit models exist: monthly subscription credits that refresh, and lifetime pay-as-you-go credits without Niche Insights. A trial needs no card.
What stands out
Wildcard search
Bulk SERP checks
Free trial
Where it costs you
Pay-as-you-go credits exclude Niche Insights, which is billed separately each year
The pages describe publisher niches and mention no rank tracking or backlink data
Right for
Niche-site owners hunting small topics where forums still rank on page one
Wrong for
Agencies needing client reporting, rank tracking or link data
United StatesCredit-based: monthly subscription or pay-as-you-go packs; free trial without a card
Bratislava-built keyword finder with a free account and local results
Ranked #2 of 11 in Best Keyword Research Tools in 2026.
Published pricingEurope
KWFinder is one module of Mangools, next to SERPChecker, SERPWatcher, LinkMiner and SiteProfiler. Searches run by keyword or by competitor domain, and the site quotes exact volumes with historical trends.
Location choice covers about 65,000 cities, districts and countries. The company claims 2.5 billion related keywords in its index. Rank tracking in SERPWatcher is weekly, and daily only on Agency. Subscriptions auto-renew and are cancelled in the account.
What stands out
Local SERP data
Free account
Rank tracking add-on
Where it costs you
The free account allows five lookups per 24 hours, so real work needs a paid tier
Refunds apply within 48 hours and not to two consecutive subscriptions
Right for
Freelancers and local-SEO people wanting a plain interface and per-city results
Wrong for
Teams needing daily rank tracking on cheaper plans
SlovakiaMonthly or yearly tiers; free account with a daily lookup cap
Finds weak-ranking sites in the SERPs to show which keywords are easy
Ranked #3 of 11 in Best Keyword Research Tools in 2026.
Published pricingNorth America
LowFruits pulls long-tail ideas from Google autocomplete, then extracts the results page for each keyword and flags how many weak sites rank. One analysed keyword costs one credit.
Standard gives 3,000 credits and 100 tracked keywords, Premium 10,000 credits and 500. Prices are in dollars, cheaper when billed yearly. Credit packs from 2,000 to 50,000 last a year, and refunds are offered for 14 days.
What stands out
Weak-site detection
Autocomplete ideas
Pay-as-you-go packs
Where it costs you
Rank tracker, competitor extraction and domain explorer need a subscription, not credits
Subscription credits do not roll over, and a refund needs fewer than 100 credits used
Right for
Bloggers deciding which long-tail topics a new site can realistically win
Wrong for
Buyers who want backlink data or a full audit suite
United StatesMonthly or yearly plans plus pay-as-you-go credit packs; three free searches a week
Browser extension that adds volume and CPC data beside search results
Ranked #4 of 11 in Best Keyword Research Tools in 2026.
Free tierPublished pricingElsewhere
The extension is free to install, and eighteen features work without a key, such as traffic and Moz link metrics, prompt templates and engagement figures for social sites.
Paid credits unlock volume, CPC, competition and trends on more than fifteen sites. The four annual plans run from 100,000 credits for one seat to 8 million credits for twenty. An MCP server lets AI assistants pull live keyword data.
What stands out
Browser extension
Credit plans
MCP server
Where it costs you
Credits expire after one year and volume data disappears once they run out
Only Chrome, Firefox and Edge are supported, with no mobile app
Right for
Writers and marketers who want numbers while browsing, paying only for volume data
Wrong for
Teams wanting a dashboard with saved projects and rank tracking
Not stated by the vendorFree extension; data bought as annual credit plans, cancellable at any time
Autocomplete mining across 17 platforms with API and MCP access
Ranked #5 of 11 in Best Keyword Research Tools in 2026.
Pricing on requestMiddle East
Keyword Tool is built on autocomplete data, and its pitch is the long-tail terms ad-planner data hides. Seventeen platforms are covered in over 190 countries and 50 languages.
Starter allows 50 requests and volume data for 50,000 keywords a day with twelve months of history, and Agency raises that to 400 requests and 48 months. Enterprise limits are quoted. Annual billing saves over 20 percent against monthly.
What stands out
17 platforms
API and MCP
30-day refund
Where it costs you
Evaluation runs through a 30-day refund guarantee, so you pay before you test
Daily request pools are shared between the web interface, API and MCP
Right for
Marketers needing long-tail ideas for YouTube, Amazon and app stores, not only Google
Wrong for
People who want to test a tool before any payment
United Arab EmiratesMonthly or annual tiers by daily request pool; money-back guarantee instead of a trial
Question and preposition maps from search suggestions, with a free daily allowance
Ranked #6 of 11 in Best Keyword Research Tools in 2026.
Published pricingNorth America
AnswerThePublic turns a seed term into a map of questions, comparisons and prepositions. Paid tiers add search volume, cost per click, tags, exports and spreadsheet pivoting, and listening alerts that email weekly summaries of new questions.
Start offers one user, Growth up to three and Business up to ten. A newer section tracks AI-search prompts. Content Studio runs on its own credits, which expire monthly.
What stands out
Question maps
Free daily searches
Listening alerts
Where it costs you
Entry tier allows 100 searches a month, which a content team can use in a week
Several features are not in the entry tier, such as comparing data over time
Right for
Content planners looking for questions people ask about a topic
Wrong for
SEO specialists who need keyword difficulty scores or competitor data
United StatesAnnual-billed tiers by monthly searches; free daily limit with fair use
Keyword clustering and search intent grouping that feeds content briefs
Ranked #7 of 11 in Best Keyword Research Tools in 2026.
Pricing on requestEurope
The product groups keywords by overlap in live results, labels search intent, and builds briefs that name the topics a page should cover. Credits are the unit: clustering 1 per keyword, a brief 100, a writing-assistant article 200 and an AI-agent article 1,200.
Basic includes 10,000 credits with one seat and five workspaces, Professional 20,000 with three seats. A Google Search Console integration and a public API are listed.
What stands out
Keyword clustering
Content briefs
Dollar trial
Where it costs you
Clustering, briefs and writing each draw credits, so cost depends on list size
After the dollar trial the account drops to pay-as-you-go
Right for
Content teams organising thousands of keywords into topic groups and briefs
Wrong for
Beginners who just need a quick volume lookup for one phrase
United KingdomCredit subscriptions, discount for annual billing; one-dollar seven-day trial
Keyword Explorer inside Moz Pro, with monthly query caps by plan
Ranked #8 of 11 in Best Keyword Research Tools in 2026.
Published pricingNorth America
Within Moz Pro, keyword research is metered. Standard allows 150 queries, Medium 5,000 and Large 15,000 a month, with keyword lists capped at 5, 30 and 60. Suggestions by topic and AI Overview flags sit alongside.
List prices are dollars per month, cheaper when paid yearly, and extra seats cost more. A free Community account unlocks a limited Keyword Explorer, so you can test before paying.
What stands out
Keyword Explorer
Query caps
Free trial
Where it costs you
A monthly query allowance of 150 on Standard runs out within a day of serious research
Rank tracking, crawling and AI dashboards come in the same bill as the keyword tool
Right for
Agencies whose clients already ask for Domain Authority next to keyword numbers
Wrong for
Solo writers who want keyword data without campaign limits
United StatesPer month per plan, published in USD, with a yearly discount and a free trial
Keywords Explorer inside a full suite, priced by tier and extra users
Ranked #9 of 11 in Best Keyword Research Tools in 2026.
Free tierPublished pricingAsia-Pacific
Keywords Explorer shares each plan with Site Explorer, Rank Tracker and Site Audit. Saved keyword lists number 50 on Lite, 100 on Standard and 200 on Advanced, and the features list adds AI suggestions, clusters, intents and translations.
Tracked keywords rise from 750 to 5,000. Prices are shown in euros with a saving for annual payment, and adding users costs extra every month.
What stands out
Keywords Explorer
Keyword lists
Extra users billed
Where it costs you
Competitor keyword research is gated behind paid tiers, since the free plan covers your own verified sites
Seats beyond the first are billed monthly on every tier
Right for
SEO teams who want keyword data tied to backlinks and rank tracking
Wrong for
Occasional researchers who need one lookup a week
SingaporePer month per plan, published in euros; extra users billed; free tools for own sites
Large suite with a free demo project and plans that scale by tracked keywords
Ranked #10 of 11 in Best Keyword Research Tools in 2026.
Free tierPublished pricingNorth America
Semrush sells one platform with research modules inside. The free plan allows one demo project and ten reports a day, which suffices to judge the interface.
Paid plans start with seven days free, then a euro price that falls when billed yearly. Tracked keywords reach 500 and then 1,500, and the top plan is a demo request. Extra users start from a monthly add-on.
What stands out
Free plan
Seven-day trial
Add-on billing
Where it costs you
The pricing page gives no keyword research limits for paid plans, only daily tracked keywords
Extra users and report packs are priced as separate lines
Right for
Marketing departments wanting keyword work next to ads, content and reporting tools
Wrong for
Researchers who need a stated query allowance before they buy
United StatesFree plan; per month per plan, published in euros; seven-day trial; add-ons billed
Free tool inside Google Ads for volume and bid estimates
Ranked #11 of 11 in Best Keyword Research Tools in 2026.
Free tierPublished pricingElsewhere
Keyword Planner offers two routes: discover new keywords from words or a website, or upload keywords to get search volume and forecasts. Results show estimated monthly searches and the average cost to appear, and can feed a new Search campaign.
Google says bid, budget, ad quality and location also decide performance. Keywords can be organised into ad groups in English only, and the tool does not report ranking difficulty.
What stands out
Inside Google Ads
Bid estimates
Billing details required
Where it costs you
Account setup with billing information is needed even for basic idea generation
Low-volume and sensitive keywords return an error instead of data
Right for
Advertisers sizing a Search campaign who accept estimates built for bidding
Wrong for
Publishers who need organic difficulty and ranking data
Not stated by the vendorFree to use inside Google Ads; setup requires billing details
Keyword research tools collect search phrases, estimate monthly volume, cost per click and ranking difficulty, and group related terms so writers and advertisers can choose which topics to target. The differences that matter are rarely in the feature list, so this is the order we would work through them.
01
Start with pricing transparency
Prices are public at 8 products (KWFinder, LowFruits, Keywords Everywhere, AnswerThePublic, Moz, Ahrefs, Semrush, Google Keyword Planner) and on request at the remaining 3, so budget time for quotes if your favourite is in that second group.
02
Look at where the vendor sits
Look at the contracting entity: these 11 vendors sit in 6 countries, split by region as North America 5, Europe 2, Elsewhere 2, Asia-Pacific 1, Middle East 1. The servers can be anywhere; the legal obligations follow the company.
Keyword research tools: discovery, difficulty or volume
Three jobs hide behind this label. Discovery tools such as Keyword Tool and AnswerThePublic mine suggestions and questions. Difficulty tools such as LowFruits and KWFinder judge whether a page could rank, LowFruits by counting weak sites in the results. Volume tools such as Google Keyword Planner and Keywords Everywhere estimate demand, the first for advertisers and the second as a browser overlay.
Suites like Ahrefs, Semrush and Moz bundle all three with tracking and links. A beginner choosing a suite pays for modules they never open, while a specialist chosen for the wrong job leaves a gap that costs time later. Write down which question you ask most often before comparing plans.
Write the three questions you ask most when planning content.
Match each question to discovery, difficulty or volume.
Check that the tool answers your main question on its free level.
Credits, daily requests and query caps: how limits are counted
Limits are the real price in this category. Keywords Everywhere charges one credit per keyword and a single search can use about 29. Keyword Insights bills 1 credit per clustered keyword and 100 per brief. LowFruits spends one credit per analysed keyword, and Keyword Tool allows 50 to 400 requests a day.
Moz caps keyword queries at 150, 5,000 or 15,000 a month, AnswerThePublic counts searches per month, and KWFinder sets a daily lookup cap on its free account. Credits may expire after a year or reset monthly. Estimate how many keywords you check in a typical week, multiply by the unit each vendor counts, and compare that with the plan allowance.
Count the keywords you check in a normal week.
Convert that number into each vendor's unit.
Ask whether unused credits expire or reset.
Where the numbers come from, and how to cross-check them
Volume figures are estimates, and sources differ. Google Keyword Planner reports ranges built for advertising, and says very low-volume terms are not discoverable. Keyword Tool and LowFruits start from autocomplete, which shows what people type rather than counting how often. Keyword Chef and LowFruits read the live results page, so their difficulty score depends on who ranks today.
Moz states a 1.25 billion keyword index and Mangools states 2.5 billion related keywords, but neither number tells you about accuracy for your market. Pick five keywords you already rank for, run them through two tools, and compare against your own Search Console figures before you trust either.
Test five keywords you already rank for.
Compare tool volume with Search Console impressions.
Re-check difficulty scores after a month, since results change.
Exit and trial terms: how easy it is to leave
Trials and refunds differ more than prices. Semrush offers a free plan and a seven-day trial, Moz a free trial, and Keyword Chef a trial without a card. Keyword Insights charges one dollar for seven days. Keyword Tool offers a 30-day refund instead of a trial, while KWFinder refunds within 48 hours and LowFruits within 14 days if fewer than 100 credits were used.
Keywords Everywhere sells annual plans that can be cancelled at any time. Subscriptions at KWFinder renew automatically until you switch them off. Put the cancellation date in your calendar on the day you sign, and export your keyword lists before you leave, since saved lists seldom move between tools.
Note the refund window and who it excludes.
Export saved keyword lists before cancelling.
Set a reminder before any automatic renewal.
What goes wrong most often when buying keyword research tools software
Buying a suite for keyword research alone, then paying for crawling and tracking you never open.
Trusting one tool's volume number without checking it against Search Console.
Ignoring how a vendor counts units, so a credit plan runs dry mid-project.
Treating Google Keyword Planner's advertising estimates as organic demand.
07
Frequently asked questions
6 answers
What is the best keyword research tools in 2026?
Keyword Chef takes first place among the 11 we reviewed. Keyword Chef LLC, established in New Hampshire, built this for people who run niche sites. Wildcard phrases such as best-of patterns expand into clusters, and a bulk SERP check flags forum and user-generated results that signal weak competition.
Credits refresh monthly on subscriptions, while pay-as-you-go credits never expire but exclude Niche Insights, a separate yearly add-on. It is a finder for small topics, not a rank tracker or link tool.
Which keyword research tools publish their pricing?
The ones that do, with the model each states:
KWFinder: Monthly or yearly tiers; free account with a daily lookup cap.
LowFruits: Monthly or yearly plans plus pay-as-you-go credit packs; three free searches a week.
Keywords Everywhere: Free extension; data bought as annual credit plans, cancellable at any time.
AnswerThePublic: Annual-billed tiers by monthly searches; free daily limit with fair use.
Moz: Per month per plan, published in USD, with a yearly discount and a free trial.
Ahrefs: Per month per plan, published in euros; extra users billed; free tools for own sites.
Semrush: Free plan; per month per plan, published in euros; seven-day trial; add-ons billed.
Google Keyword Planner: Free to use inside Google Ads; setup requires billing details.
3 vendors do not print a price.
Is there a free keyword research tool?
Keywords Everywhere, Ahrefs, Semrush, Google Keyword Planner can be used for free, either as a free plan or a self-hosted edition.
Where are these keyword research tool vendors established?
In 6 countries across 5 regions: North America 5, Europe 2, Elsewhere 2, Asia-Pacific 1, Middle East 1.
Keyword Chef: United States.
KWFinder: Slovakia.
LowFruits: United States.
Keywords Everywhere: Not stated by the vendor.
Keyword Tool: United Arab Emirates.
AnswerThePublic: United States.
Keyword Insights: United Kingdom.
Moz: United States.
Ahrefs: Singapore.
Semrush: United States.
Google Keyword Planner: Not stated by the vendor.
What should you use instead of Keyword Chef?
Second is KWFinder, which suits Freelancers and local-SEO people wanting a plain interface and per-city results. Third is LowFruits, which suits Bloggers deciding which long-tail topics a new site can realistically win.
Who should not buy Keyword Chef?
Agencies needing client reporting, rank tracking or link data. Pay-as-you-go credits exclude Niche Insights, which is billed separately each year.
Vendors who think their keyword research tools product should be here can tell us about it: what it does, who it is for. The call is ours, and software advice sets out what being listed means.
