How we make this list: we compare pricing pages, product documentation and public user reviews. Ratings come from G2, Capterra or Trustpilot, with the date we checked them.
Key takeaways
- A free Semrush account is the closest SpyFu replacement: competitor domain and keyword lookups with the deepest database, capped at 10 reports a day.
- Ubersuggest free gives 3 searches a day plus a 150 page audit weekly; fine for one site, useless for agency volume.
- Ahrefs Free and Google Keyword Planner are free on your own data forever, but neither gives you competitor research, which is the point of SpyFu.
- SEO PowerSuite has the only genuinely permanent desktop free tier; Similarweb free covers traffic estimates nothing else here touches.
Quick comparison
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The best free alternatives to SpyFu in 2026
#1
Semrush (free account)
Best for: Closest free SpyFu style competitor research
Visit semrush.com
Starting priceFree
Free planYes
If you cancel SpyFu tomorrow, a free Semrush account is where the withdrawal hurts least. Domain lookups on competitors, keyword gap style browsing and position data all exist in the free account, throttled to roughly ten reports daily. Used deliberately, ten good questions a day, it covers a small site's competitor watching indefinitely.
The discipline is the product: save your lookups for decisions. When the daily cap starts blocking work weekly rather than occasionally, that is the honest signal that you have outgrown free, and Semrush will be happy to explain its paid plans at that point.
What we like- Domain overview and keyword research on any competitor, the core SpyFu job, on the deepest database in this list, free account allows about 10 reports or lookups a day and one project, with 10 tracked keywords, no credit card needed to register, keyword tool shows volume, difficulty, intent and CPC in one view
Watch out for- Ten reports a day disappears during real research sessions, exports and history are paid features, so free work stays on screen, Semrush restructured its paid plans in 2026 after Adobe's acquisition, so upgrade prices differ from older guides, the one free project limits you to a single site of your own
#2Ubersuggest
Best for: Beginner keyword and competitor checks4.2/5 on
G2 (160 reviews, checked Oct 2026)
Visit neilpatel.com
Starting priceFree
Free planYes
Ubersuggest free suits the site owner who checks competitors monthly, not the consultant who lives in the data. Between the three daily searches and the extension's overlay searches, a focused session answers the standard questions: what does that rival rank for, what is this keyword worth, what is broken on my site.
Neil Patel's tool is deliberately simple, and the limits are the trade. When 25 tracked keywords and a weekly 150 page audit stop fitting your site, you have outgrown the free tier by design, and Ubersuggest's paid plans are among the cheapest upgrades in SEO software.
What we like- The friendliest interface here for non specialists, free tier gives 3 searches a day, 25 tracked keywords and a 150 page site audit each week, the free Chrome extension adds about 40 overlay searches a day inside Google, domain overview shows a competitor's top pages and keywords in plain language
Watch out for- Three main searches a day is the tightest cap on this list, data depth trails Semrush and Ahrefs on long tail keywords, free tracked keywords and audits assume one small site, paid plans start at $29 a month, or about $12 in some current offers, so the upsell is close
Starting priceFree
Free planYes
Be clear about what Ahrefs Free is: the old Webmaster Tools under a new name, a generous free product for your own sites and a wall against everyone else's. Audits, backlink profiles and keyword positions for properties you verify, all with Ahrefs grade data.
That makes it a complement to this list rather than a SpyFu replacement. Pair it with a free Semrush account: Ahrefs Free for deep truth about your own site, Semrush free for the daily ration of competitor looks. Together they cover most of what a small site used SpyFu for.
What we like- Free for unlimited verified sites you own, Site Audit with 5,000 crawl credits per project each month, Site Explorer shows up to 1,000 backlinks and 1,000 keywords per view for your own properties, Ahrefs' link index is the most respected in the industry, credits spent only on pages returning a valid response
Watch out for- Verified sites only: there is no competitor research at all, which is SpyFu's entire point, backlink and keyword views are capped at 1,000 rows, free keyword generator exists separately but with limited output, paid Ahrefs starts at $29 a month for a light Starter plan
Starting priceFree
Free planYes
Keyword Planner answers the oldest SpyFu question, is anyone searching for this, with the source data everyone else estimates. For content planning and market sizing, its ranges are often enough: a term at 100K monthly searches and one at 1K need different strategies regardless of the exact figure.
Its limits are structural. Planner will never show you a competitor's keyword portfolio or your own rankings, because Google built it to sell ads. Use it as the demand layer under the other tools, not as a standalone SpyFu substitute.
What we like- The only keyword volumes sourced from Google itself, completely free inside a Google Ads account, with no daily cap, shows seasonality, location level demand and competition for paid search, discover new keywords and get forecasts for any market Google sells ads in
Watch out for- Without active ad spend, volumes show as ranges (1K to 10K) rather than exact numbers, it is an advertising tool: no rankings, no competitor domains, no backlink data, setup requires an Ads account and sometimes billing details before data appears, keyword grouping reflects advertiser intent, not search behaviour alone
Starting priceFree
Free planYes
SpyFu users often care less about a rival's exact keywords than about whether the rival is growing. Similarweb free answers that: type a domain, see estimated visits, trend and traffic sources. For market mapping and sales prospecting, that view is worth more than keyword lists.
Calibrate your trust. Similarweb models traffic from panels and partnerships; for big sites the shape is reliable, for small ones the numbers are rough or absent. Treat free Similarweb as a compass, and never quote its figures to a client as fact.
What we like- Estimates any website's traffic, sources and geography without the site owner's cooperation, the one SpyFu style question nothing else free answers well, free lookups cover the headline numbers for major sites, channel mix data (search, social, direct, referrals) guides where rivals invest
Watch out for- Estimates, not measurements: small sites return little or no data, free access is a sampler for a paid product starting around $125 a month, no keyword level detail on the free tier, numbers for mid size sites can swing far from their real analytics
#6
Moz Free Tools
Best for: Authority and link checks
Visit moz.com
Starting priceFree
Free planYes
Moz's free tools answer the quick questions: how authoritative is that site, what links to this page, is this keyword plausible. The Domain Authority score, whatever its technical limits, is still the number non SEO stakeholders ask for in meetings.
As a SpyFu replacement it is partial at best. Think of Moz free as the authority layer: a fast, recognised check on any domain's standing, used alongside Semrush free's keyword data and Ahrefs Free's view of your own links.
What we like- Domain Authority and Page Authority scores remain the shorthand clients recognise, free tools include link research lookups and a keyword explorer sampler, MozBar browser extension shows authority metrics on any page or result, free, long established educational material for beginners learning the craft
Watch out for- Free lookups are limited and metered, with full Link Explorer behind Moz Pro at $49 a month, data depth and index size trail Ahrefs and Semrush, free tier is a set of separate small tools rather than one workspace, competitor keyword research is minimal at this level
Starting priceFree
Free planYes
SEO PowerSuite is the veteran's answer to subscription fatigue. Its free edition is a real product: Rank Tracker, WebSite Auditor, SEO SpyGlass and LinkAssistant in limited but functional form, permanently, which no web rival on this list matches.
The trade is convenience. Everything runs locally, updates are manual in spirit, and collaboration means exporting files. For a solo site owner who refuses another monthly bill, that trade has been worth it for years, and the paid licence, when limits bite, is a once a year decision.
What we like- The only genuinely permanent free tier among full suites: rank tracking, site audit, backlink checking and link prospecting in four desktop apps, free edition covers one project with working core features, not a countdown trial, your data lives on your machine, with no account metering, paid licence is a yearly fee (about $349) rather than another monthly subscription
Watch out for- Desktop software: no cloud access, no team sharing, and crawls run on your hardware, free tier limits crawl depth, saved projects and backlink history, interface and workflow feel older than the web suites, rank tracking at scale needs proxies and patience the free tier does not provide
Starting priceFree
Free planYes
Keyword Surfer puts a slice of SpyFu's keyword data where you already work: the search results page. Volumes beside the query, related terms in the sidebar, traffic estimates on the results themselves. For writers and small site owners scoping articles, it removes the most common reason to open a paid suite.
It is deliberately a layer, not a platform. Nothing is saved, tracked or reported. Keep it installed beside whichever tool above you choose as home base, and the pair covers daily work surprisingly far into a site's growth.
What we like- Completely free Chrome extension from the Surfer team, overlays search volumes, CPC and related keywords directly onto Google results, shows estimated traffic and on page data for ranking pages, zero setup: install and search, useful for fast content scoping without opening a suite
Watch out for- Volumes are estimates modelled from available data, not Google's own figures, no domain level competitor research, history or tracking, extension only: nothing exists outside Chrome search sessions, feature set is a sampler for the paid Surfer product
How we chose
Every tool here has a free tier usable today without a credit card; trials that convert automatically were excluded. We judged each on the SpyFu jobs: competitor keyword and domain research first, then keyword data, traffic estimates and own site analysis. Free limits were taken from October 2026 sources that checked vendor pages, and limits are printed per tool because they are the real specification of a free plan. SpyFu itself is not listed, as the target of this alternatives article. We did not claim hands-on testing.
No single free tier replaces a $39 SpyFu plan; a small stack does. The working combination for one site: Ahrefs Free for your own audit and backlinks, a free Semrush account rationed to ten competitor questions a day, Keyword Planner for demand checks, and Keyword Surfer for in the moment scoping. Similarweb free handles monthly market checks, and Moz free covers the authority question in client language.
Two rules keep the stack honest. First, write down each tool's cap and your monthly questions before you start; free tools punish browsing and reward lists. Second, recheck limits quarterly. Vendors trim free tiers quietly, and a workflow built on last year's limits fails silently, usually the week a report is due.
Frequently asked questions
What does SpyFu do that free tools cannot fully match?
Uncapped competitor history. SpyFu's paid plans show years of a rival's keyword and ad history with unlimited exports. Free tiers ration lookups daily, cap rows and hide history. The stack in this article covers the same questions at small scale; it cannot reproduce bulk historical research for free.
Is a free Semrush account really free forever?
The free account is a standing tier, not a trial: roughly 10 reports a day and one project, no card required. Semrush also offers a separate 7 day trial of paid plans, which does convert, so keep the two distinct when you sign up.
Which free tool is best for one small business site?
Ubersuggest for guided simplicity, or Ahrefs Free plus a free Semrush account for depth. The first gives 3 searches a day and weekly audits in plain language; the second pair gives better data at the cost of managing two sets of limits.
Are the traffic and volume numbers in free tools accurate?
They are estimates, each with its own model. Keyword Planner's ranges come from Google itself but are deliberately coarse without ad spend. Similarweb traffic for small sites is rough. Use free data for comparisons and orders of magnitude, not for promises to clients.
When is paying for SpyFu or a rival the right call?
When the caps block you weekly: client reporting, several sites, PPC competitor monitoring or historical research. At that point compare SpyFu Basic at $39 a month against entry plans from Ubersuggest ($29) and Semrush on their merits, not on their free tiers.
Sources we checked (0)
Is your product missing or out of date?
We review this list regularly. Vendors can request a listing, send updated pricing or ask about featured placement.
Shihab Mia · Founder, Rankite
Shihab has 5+ years in B2B and SaaS SEO. He writes Rankite's software buying guides from pricing pages, documentation and public user reviews. More about Shihab.
Ahrefs Free
Google Keyword Planner
Similarweb (free)
SEO PowerSuite
Keyword Surfer