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For most buyers, Marketing Miner is the best place to start: it combines multiple SEO research and tracking tools, starts at $19, and has a free plan. LowFruits is a stronger fit if you mainly want to check SERPs and find long-tail opportunities; Mangools is a simpler choice for solo keyword work. There is no one-size-fits-all winner here. Etsy sellers should look at eRank or Sale Samurai, while SpyFu is more compelling for Google Ads competitor research than as a primary SEO keyword tool. Check credit, plan and add-on limits before committing.
Quick picksThe shortlist
Marketing MinerMarketing MinerBest overall · €19/mo
LowFruitsLowFruitsBest for SERP checks · $20.75/mo
MangoolsMangoolsBest for solo bloggers · $37.70/mo
SpyFuSpyFuBest for Google Ads · $29/mo
Keywords EverywhereKeywords EverywhereBest cheap overlay · $7/mo
eRankeRankBest for Etsy keywords · $5.50/mo
Sale SamuraiSale SamuraiBest Etsy alternative · $16.65/mo
Keyword ToolKeyword ToolBest free long-tail ideas · $68/mo
Exploding TopicsExploding TopicsBest for trend spotting · $39/mo
UbersuggestUbersuggestBest low-cost starter · $16/mo
SemrushSemrushBest unified SEO suite · $117.33/mo
Keyword Magic ToolKeyword Magic ToolBest for Semrush users · €112.52/mo
AnswerThePublicAnswerThePublicBest for question research · $10/mo- Long Tail ProLong Tail ProBest only if confirmed · $25/mo
01Compared at a glance
| Tool | Score | From | Free plan | Trial |
|---|---|---|---|---|
| Marketing MinerMarketing Miner | 7.0 | €19/mo | Yes | 10 days |
| LowFruitsLowFruits | 6.9 | $20.75/mo | No | — |
| MangoolsMangools | 6.3 | $37.70/mo | Yes | 10 days |
| SpyFuSpyFu | 6.5 | $29/mo | No | — |
| Keywords EverywhereKeywords Everywhere | 6.4 | $7/mo | Yes | — |
| eRankeRank | 6.9 | $5.50/mo | Yes | — |
| Sale SamuraiSale Samurai | 6.1 | $16.65/mo | Yes | 3 days |
| Keyword ToolKeyword Tool | 6.0 | $68/mo | Yes | — |
| Exploding TopicsExploding Topics | 6.0 | $39/mo | No | 7 days |
| UbersuggestUbersuggest | 5.3 | $16/mo | Yes | 7 days |
| SemrushSemrush | 5.8 | $117.33/mo | Yes | Yes |
| Keyword Magic ToolKeyword Magic Tool | 5.8 | €112.52/mo | Yes | — |
| AnswerThePublicAnswerThePublic | 5.2 | $10/mo | No | — |
| Long Tail ProLong Tail Pro | 2.2 | $25/mo | No | 7 days |
02The picks, in detail
- Best overallMarketing MinerMarketing Miner
Marketing Miner has the strongest overall fit in this list for teams that want several SEO research and tracking tools in one place. It starts at $19 and has a free plan; its published use cases also include Google and Seznam tracking and large data lists. Check the plan limits and AI add-on costs before switching, since those can change the value.
What works
- Paid plans start at €19/month before VAT
- Free plan includes one project
- Tracks Google and Seznam positions
What doesn't
- Free plan limits tracking to 10 keywords
- Free plan includes no AI credits
- AI visibility tracking costs extra
- Best for SERP checksLowFruitsLowFruits
LowFruits is a good match for SEOs checking search results in bulk, researching long-tail terms and filtering for weak-ranking sites. It starts at $20.75. The trade-off is that credits add to the budget, and the published guidance is to verify the results yourself. It is a focused option, not the broadest all-in-one pick.
What works
- Bulk SERP checks flag weak-authority sites
- Wildcard searches surface keyword combinations
- Clusters keywords by search intent
What doesn't
- No ongoing free plan is published
- Standard and Premium credits do not roll over
- Pay-As-You-Go credits expire after one year
- Best for solo bloggersMangoolsMangools
Mangools suits solo bloggers who want core keyword metrics in a simple tool, with basic AI brand-mention monitoring also listed among its use cases. It starts at $37.70 and has a free plan. Reddit feedback flags local-accuracy and support gaps, so buyers who depend on local data should verify it before choosing Mangools.
What works
- Annual Basic plan starts at $37.70/month per pricing page
- Free plan plus 10-day trial let you test before buying
- Clean, simple interface praised in one Reddit thread
What doesn't
- Free plan capped at 5 keyword lookups per 24 hours
- Monthly billing costs notably more than annual per pricing page
- Reddit users report inaccurate CPC and local-rank data
- Best for Google AdsSpyFuSpyFu
SpyFu is worth considering when the main job is researching Google Ads competitors, or when a solo marketer needs a budget option for tracking several competitor sites. It starts at $29. Its fit is narrower for organic keyword research: the published assessment finds it less convincing as a primary SEO keyword tool.
What works
- Basic starts at $29/month with annual billing
- Research competitors’ Google Ads keywords and ads
- Includes SEO keyword and backlink research
What doesn't
- No free plan
- Basic exports are capped at 10,000 rows
- Monthly Pro + AI rises to $119 after month one
- Best cheap overlayKeywords EverywhereKeywords Everywhere
Keywords Everywhere starts at $7 and has a free plan, making it a low-entry-cost option for solo SEOs who want quick overlay data. But the sticker price does not tell the whole story: the published assessment flags confusing credit math and says to budget for top-ups. It may suit teams that already plan for credits or often disable the extension.
What works
- Entry plan starts at $7/month per the pricing page
- Free tier keeps AI prompt templates and social metrics
- Covers 15+ sites including YouTube and Amazon
What doesn't
- All paid plans billed annually only, no monthly option
- Reddit users report one search can cost 30-50+ credits
- Unused credits expire after one year per the pricing page
- Best for Etsy keywordseRankeRank
eRank is the clearest fit here for Etsy sellers researching keywords, watching competitors or auditing listings. It starts at $5.50 and has a free plan, making it one of the lower-priced options in this list. Keep its role in perspective: keyword suggestions can inform a listing, but they are not a sales strategy.
What works
- Free plan available for basic research
- Basic starts at $5.99 monthly
- Includes keyword, trend, and competitor research
What doesn't
- Free plan allows only 5 daily keyword lookups
- Basic limits competitor monitoring to 5 shops
- Higher research caps require a paid plan
- Best Etsy alternativeSale SamuraiSale Samurai
Sale Samurai is another Etsy-focused option, with shop and competitor insights listed among its use cases. It starts at $16.65 and has a free plan. The published assessment recommends checking the free tier before paying, because users question the estimates. Sellers willing to verify those numbers may find it worth comparing with eRank.
What works
- Free plan requires no payment method
- Includes keyword research and listing analysis
- Free Chrome extension is included
What doesn't
- Free plan limits searches to 20 monthly
- Free plan caps listing analyses at 10 monthly
- Monthly plan costs $19.99
- Best free long-tail ideasKeyword ToolKeyword Tool
Keyword Tool is a fit for people who want free long-tail keyword ideas, terms Keyword Planner may hide, or low-volume research without signing up. It starts at $68 and has a free plan, but the more substantial Pro tiers are a different price proposition. Reddit users compare them unfavorably with Semrush and Long Tail Pro, according to the published assessment.
What works
- No account needed for the free scraper
- Pulls suggestions from 5+ platforms, not just Google
- 750+ suggestions per search term, per the pricing page
What doesn't
- Free tier hides all volume, CPC and competition data
- Starter plan starts at $68/mo annual, $88/mo monthly
- Reddit users call Pro pricier than Longtail Pro Platinum
- Best for trend spottingExploding TopicsExploding Topics
Exploding Topics is aimed at product scouts looking for early-stage ideas, marketers who want lightweight trend alerts and investors tracking growing startups. It starts at $39. The limitation is depth: the published assessment says it is thin on keyword research and that plans below $99 per month are tightly capped. Treat it as a trends tool, not a full keyword suite.
What works
- Trend database surfaces startups and products early
- Free SEO toolset bundled at no extra cost
- Trends API lets you pipe data into dashboards
What doesn't
- Entry plan caps tracked trends at just 100
- No free plan, only a 7-day trial
- Price triples to $249/mo for full trend reports
- Best low-cost starterUbersuggestUbersuggest
Ubersuggest starts at $16 and has a free plan, which makes it an accessible starting point for new site owners, small businesses and people managing one site. Its published use cases also include AI search visibility. The caution is data quality: Reddit users repeatedly call its data unreliable, so check important findings against another source.
What works
- Starting price of $16/month beats Ahrefs or Semrush
- Free plan and 7-day trial let you test first
- Combines Google rank tracking with AI engine visibility
What doesn't
- Reddit repeatedly calls keyword volume and difficulty data inaccurate
- Multiple threads describe the tool as 'garbage' or 'terrible'
- Add-ons stack fast at $5 each for seats, prompts, keywords
- Best unified SEO suiteSemrushSemrush
Semrush is suited to agencies tracking AI visibility, teams that want one SEO dashboard and users combining backlink and keyword data. It starts at $117.33 and has a free plan. The published assessment flags its pricing structure and trial-billing complaints, so compare the cost against the features your team will actually use before switching.
What works
- 29 billion keyword database per the pricing page
- 43 trillion link backlink index claimed
- AI visibility tracking across ChatGPT and Gemini
What doesn't
- Entry plan still runs $117.33/mo billed annually
- Add-ons for users and reports stack up fast
- Reddit users report inaccurate data on smaller sites
- Best for Semrush usersKeyword Magic ToolKeyword Magic Tool
Keyword Magic Tool makes the most sense for current Semrush SEO subscribers who want broad keyword lists or competitor analysis. The published pricing starts at $112.52, with a free plan listed, but tool-level pricing is unclear. Reported data issues also temper the case. Buyers who are not already in the Semrush ecosystem should compare the total cost first.
What works
- Semrush reports a dataset of 29 billion keywords
- Semrush lists keyword research and a Keyword Tool
- SEO plan includes basic keyword research
What doesn't
- Keyword Magic Tool-specific pricing is not published
- Tool-specific usage limits are not published
- SEO plan starts at €112.52 monthly, billed annually
- Best for question researchAnswerThePublicAnswerThePublic
AnswerThePublic offers question research and AI drafting, with Amazon and ChatGPT question data among its listed use cases. It starts at $10, and the published details say buyers should be comfortable with annual billing. Reddit criticism describes it as overpriced autocomplete, so compare its research and drafting value with the amount of content work you need.
What works
- Pulls questions from Google, YouTube, Amazon and ChatGPT
- AI drafts content directly from a chosen question
- One-click publishing built into the platform
What doesn't
- No free plan and no published free trial
- Starter caps out at 100 searches per month
- Reddit calls the pricing absurd next to free alternatives
- Best only if confirmed
Long Tail ProLong Tail Pro
Long Tail Pro starts at $25, and its pricing page still lists plans. That is not enough to make it a safe recommendation: Reddit users say the tool is dead and report that cards are still charged, according to the published assessment. Confirm the service is active and the billing terms before paying; otherwise, choose another option.
What works
- Tiered pricing historically scaled from solo to agency use
- Annual billing nearly halved the monthly rate per pricing page
- Older Reddit comments called it good for niche keyword research
What doesn't
- Reddit threads from 2023 say the site won't load at all
- Support email reportedly bounces for canceled accounts
- Users report being charged after canceling, per r/SEO
03How we chose
We weigh published pricing, plan limits, product documentation and user sentiment reported on Reddit. We also consider whether a tool’s stated purpose fits the job: finding search terms, estimating ranking difficulty or judging potential value. We do not treat a long feature list as proof that a product is the right choice. Prices and limits can change, so buyers should confirm current terms on the provider’s pricing page before switching. We make no claims of hands-on testing, benchmarks or screenshots; where published material does not establish a detail, we leave it out rather than guess.
04Choose for the decision you need to make
Start with the question your research needs to answer. Are you building a list of terms, checking how competitive a phrase may be, or looking for clues about its commercial value? Those are different jobs, and a tool’s name or feature count will not tell you how well it fits yours. Before paying, check the provider’s documentation for what its metrics mean and the pricing page for which plan includes the data you need. Then compare that with your workflow: how many terms you handle, who needs access, and whether you need to export or reuse results. If the provider does not publish a limit or definition, treat it as unknown—not as a capability you can count on. The right pick is the one that answers your recurring question within your budget.
05Check the cost and limits before you switch
A low starting price can hide a poor fit if the plan you need has a cap that interrupts your work. Compare the published price with the limits that matter to you, such as how much research you can do and which features are included. If a limit, billing term or metric definition is not published, ask the provider before moving a workflow over. Also consider the cost of changing tools: document the reports, exports and recurring tasks your team relies on, then confirm the replacement can support them. Do not assume two tools use the same definition for a keyword metric just because they use the same label. Read the product docs, check current pricing, and use Reddit reports as user sentiment rather than proof that a feature will work for your use case.
Questions people ask
Which keyword research tool is best?
There is no single best fit for every workflow. First decide whether you need ideas, ranking-difficulty estimates or commercial clues. Then compare the provider’s documentation, published plan limits and current price against that job. If a key limit or metric definition is not published, confirm it before buying.
How do I compare keyword difficulty scores?
Do not assume scores from different tools are directly comparable. Check each provider’s documentation for how it defines or calculates difficulty, and treat an unpublished method as unknown. Use the score as one input in your decision, not as a guarantee that a page will or will not rank.
Are free keyword research tools enough?
They may be enough for a small or occasional research task, but whether they fit depends on the work you need to do and the limits on the plan. Check the current pricing page for caps and included features. If those details are not published, ask before building a process around them.
What should I check before switching keyword tools?
List the tasks, exports and metrics your team relies on, then confirm the new provider’s docs and plan limits cover them. Compare current prices and billing terms, and check whether similarly named metrics mean the same thing. Treat Reddit comments as user reports, not a guarantee of your own results.