The disclosure first, because it decides how you should read the last third of this article: we are Geonode and we sell proxies. Proxies are what you would use to build a competitive-intelligence pipeline yourself, so we have an obvious interest in the do-it-yourself option. Here is the honest limit of that interest — you cannot replicate Similarweb's core dataset by scraping, at any budget, with any proxy pool. Traffic estimates come from clickstream panels: aggregated browsing behaviour bought from browser extensions, apps and ISPs. That data is purchased, not crawled. If what you need is "how many visits did competitor.com get last month", proxies are the wrong tool and we would rather say so on line one than sell you 500 GB you will discover is useless in week two. There is a real DIY option, covered later, but it answers different questions.
With that established, here is the landscape.
What Similarweb Actually Does and Why the Alternatives Are Not Interchangeable
Most "Similarweb alternative" lists compare tools as if they all measured the same thing. They do not. Similarweb bundles at least four separate products, and a given alternative usually replaces exactly one of them:
Traffic estimation for arbitrary domains. Visit counts, page views, bounce rate, average duration for sites you do not own. This is the clickstream-panel product and it is the hard one.
Traffic sources and channel mix. How much of a site's traffic is direct, search, referral, social, paid. Derived from the same panel data.
Audience and demographics. Geography, interests, overlap with other sites.
Keyword and competitive research. Which search terms bring traffic to a domain — overlapping heavily with what SEO tools do, and typically less well.
The reason this matters: if you use Similarweb primarily for the fourth job, a dedicated SEO platform will do it better for less money. If you use it for the first, your options narrow sharply, because there are only a handful of companies in the world that operate panels at that scale. Work out which job you are buying before you compare anything.
The Pricing Problem Nobody Mentions
Similarweb does not publish its prices. Its pricing page describes self-service packages for individuals and directs everyone else to sales: "If you're interested in our solutions for businesses and enterprises, please contact our sales team to discuss a custom package tailored to your needs."
This is worth naming plainly because it changes how you should evaluate alternatives. Third-party figures circulate widely — you will find blogs quoting entry tiers at various numbers — but none of them come from the vendor, and we are not going to repeat unverified prices as though they were facts. What you can rely on is the structural point: anything beyond the self-service tier requires a sales conversation, an annual commitment, and a negotiation in which your leverage depends entirely on knowing what the alternatives cost.
Which is precisely why the published prices below are useful. Every figure in the next section comes from the vendor's own pricing page, checked in September 2026. Verify before you buy — SaaS pricing moves.
The Paid Alternatives Compared
| Tool | Entry price | Top self-service tier | Replaces which job | Publishes pricing |
|---|
| Semrush | $139/mo (SEO plan) | $549/mo (Advanced) | Keyword research, traffic estimation via add-on | Yes |
| Ahrefs | $29/mo (Starter) | $449/mo (Advanced) | Backlinks, keyword research, organic traffic estimation | Yes |
| Serpstat | $50/mo (Individual) | $410/mo (Agency) | Keyword and competitor research | Yes |
| Similarweb | Not published | Not published | All four | No |
Semrush is the closest thing to a like-for-like on the traffic-estimation job, because it operates its own clickstream data business and folds that into its traffic analytics. Plans run from $139/mo for the SEO plan through $199, $299 and $549 for the Starter, Pro+ and Advanced tiers, with annual billing cutting roughly 15–17% off. There is a free plan. Note the add-on economics: additional users start at $45/mo, and report add-ons are billed separately — a three-person team on a mid tier costs meaningfully more than the headline.
Ahrefs does not sell panel-based traffic estimates. What it sells is organic search traffic estimation derived from its own keyword index and click models, which is a different quantity: it tells you what a domain earns from search, not what it earns overall. For competitive SEO work that is often the more useful number, and the $29/mo Starter tier makes it the cheapest serious entry point on this list. Lite is $129/mo, Standard $249/mo, Advanced $449/mo, Enterprise $1,499/mo on an annual commitment, with up to 17% off for paying annually. There is a free tier limited to your own verified site.
Serpstat is the value option — $50/mo for an individual seat, $100 for Team, $169 for Team x2, $410 for Agency, with up to 27% off annually. Its index is smaller than the two above, which matters most in non-English markets and long-tail keywords. For straightforward competitor keyword research at a small agency it is frequently sufficient, and the price difference against a comparable Semrush seat is not marginal.
The pattern across all three: they are excellent at search-derived competitive intelligence and approximate at total-traffic estimation. If your actual question is "which keywords are my competitors winning", any of them beats Similarweb. If it is "how big is this company", none of them fully replaces it.
The Free Sources That Beat Most Paid Estimates
This is the section most comparison articles skip, presumably because free tools do not pay affiliate commissions. Several of these are more authoritative than any commercial estimate, because they are measurements rather than models.
Cloudflare Radar publishes global internet traffic, attack and technology-adoption data drawn from Cloudflare's network and its 1.1.1.1 public resolver. The API is free — the documentation states plainly that it is "free, allowing academics, technology professionals, and other web enthusiasts to investigate Internet usage across the globe" — with data under a CC BY-NC 4.0 licence, so free for non-commercial use with attribution. It will not give you per-site visit counts, but for questions about traffic trends, protocol adoption, geographic patterns and relative domain popularity, it is real observed data rather than a panel projection.
Chrome UX Report is field performance data from actual Chrome users, available via API, a BigQuery dataset and a dashboard, all free. It reports Core Web Vitals for real visitors to any origin that clears an eligibility threshold — Google requires origins to be "publicly discoverable" with "a large enough number of visitors in order to create a statistically significant dataset". Two things make this valuable for competitive work. First, mere presence in CrUX is a signal: a domain that does not appear does not have meaningful Chrome traffic. Second, you get genuine performance comparison against competitors, which no traffic-estimation tool provides.
Tranco is a domain popularity ranking built for research use, explicitly "hardened against manipulation". It averages five underlying sources — Cisco Umbrella, Majestic, Farsight, CrUX and Cloudflare Radar — over a rolling 30-day window to produce a list of one million domains, free via download, permanent URL, API, BigQuery, and Python and Go packages. Its own documentation makes the point that motivates it: existing rankings "disagree on which domains are most popular, can change significantly on a daily basis and can be manipulated". If you need relative popularity rather than absolute visits, this is more defensible than a commercial estimate and costs nothing.
Google Trends gives relative search interest over time by region, free. It measures demand rather than traffic, which for market-sizing questions is frequently the number you actually wanted.
A realistic combination — Tranco for relative scale, CrUX for real-user presence and performance, Cloudflare Radar for macro trends, Google Trends for demand — answers a surprising share of competitive-intelligence questions at zero cost. It will not produce a slide saying "competitor.com had 4.2M visits in August". It will produce defensible answers to most of the questions that slide was meant to support.
Building It Yourself and What That Really Costs
Now the part where our commercial interest lies, stated as honestly as we can manage.
What you can build. A scraping pipeline gives you first-party observation of things that are publicly visible: competitor pricing and how it changes, product catalogue size and churn, job postings as a hiring signal, SERP positions for the keywords you care about, review volume and sentiment, feature and content changes over time. Every one of these is a leading indicator, and none of them appears in Similarweb at all. This is the genuine case for DIY — not that it is cheaper than a subscription, but that it answers questions no subscription answers.
What you cannot build. Traffic volume. Bounce rate. Session duration. Channel mix. Audience overlap. All of these require observing users, not sites. No amount of crawling produces them. If someone sells you a proxy plan on the promise that you can scrape traffic numbers, they are selling you a misunderstanding.
What it costs. For rank tracking and price monitoring, residential bandwidth runs from $0.79/GB with us, dropping to $0.50/GB above 100 GB and $0.27/GB above 1 TB; datacentre traffic starts at $0.14/GB, priced by traffic rather than per IP. New accounts get 1 TB of residential traffic free, which is enough to establish whether the approach works for you before spending anything. Current figures are on our pricing page — these were checked in September 2026 and you should confirm them.
What it also costs, which is the part vendors leave out. Engineering time to build the scrapers, ongoing time to repair them when targets change their markup, storage and scheduling infrastructure, and someone's attention when a job silently starts returning partial data. A realistic DIY competitive-intelligence pipeline is not a weekend project that then runs itself; it is a small system with an owner. Weighed against $139/mo for a subscription that works immediately, DIY only wins when you need data the subscription does not have. That is a real and common situation — but check that it is your situation before committing an engineer to it.
For the rank-tracking case specifically, a managed API is usually the better buy than assembling it from raw proxies, and we cover that trade-off in our comparison of rank tracker APIs.
How Accurate Is Traffic Estimation Anyway
A question worth asking before optimising which vendor's estimates to buy.
Every commercial traffic figure for a site you do not own is a model output. A panel of some millions of users is observed, that panel is weighted to correct for the ways it is unrepresentative, and the result is extrapolated to the internet. The extrapolation is where the error lives, and the error is not uniform: it is smallest for large consumer sites in markets where the panel is dense, and largest for small sites, B2B sites, non-English markets and anything with an unusual audience.
You can see the consequences without doing any statistics. Compare estimates for the same mid-sized domain across two vendors and they will frequently differ by a factor that would change your conclusion. Compare either against a site's real analytics — which occasionally becomes public through a filing or a transparency report — and the gap is often substantial. Tranco's own justification names exactly this problem in the ranking context: sources "disagree on which domains are most popular".
The practical implications:
- Treat estimates as ordinal, not cardinal. "Competitor A is roughly three times competitor B" is a defensible reading. "Competitor A had 4,231,000 visits" is not.
- Trends within a single vendor are more reliable than levels. The same model applied over twelve months gives a directionally useful curve even if every point is wrong by the same factor.
- Never compare an estimate for one site against real analytics for another. They are not the same unit of measurement.
None of this means the tools are worthless. It means the precision they display is not the precision they have, and a cheaper tool with a similar error bar is not a downgrade.
Choosing by Job Rather Than by Feature List
| Your actual question | Best answer | Cost |
|---|
| Which keywords do competitors rank for | Ahrefs or Serpstat | From $29/mo or $50/mo |
| How big is this company, roughly | Similarweb or Semrush Traffic Analytics | Sales call, or from $139/mo |
| Is this domain significant at all | Tranco plus CrUX presence | Free |
| How does competitor performance compare | CrUX | Free |
| Where is demand moving in my market | Google Trends plus Cloudflare Radar | Free |
| What are competitors charging and shipping | Your own scraping pipeline | Engineering time plus bandwidth |
| Are my rankings moving | A rank tracking API | Varies |
The table makes the central point better than prose: most people buy an all-in-one platform to answer two or three questions, and for each of those questions individually there is usually a better or cheaper answer. The bundle is convenient, not optimal. Whether convenience is worth the premium depends on how many of the rows you actually need.
When You Should Just Keep Similarweb
Against our own interest and against the premise of the article, here are the cases where switching is a mistake.
Total-traffic estimates are the deliverable. If your work product is a market-sizing deck and stakeholders expect visit numbers for a competitive set, you need panel data. The free sources give you rank and presence, not volume. Switching to save money and then not being able to produce the deliverable is a false economy.
Everyone in your industry cites the same source. In some sectors Similarweb figures function as a shared reference point. Being right with different numbers is a harder position than being conventional with the same ones. This is an unsatisfying reason and it is frequently the operative one.
You need the app and mobile side. Cross-platform intelligence — web plus mobile app performance in one place — has few substitutes, and stitching it together from separate sources costs more in time than the subscription costs in money.
Your usage is genuinely broad. If you use six of the platform's modules regularly, the bundle economics work and unbundling into four subscriptions plus a scraping pipeline will cost more and run worse.
And one non-obvious case: if you are a small team without engineering capacity, the DIY option is not available to you at any price. It requires someone who can build and maintain scrapers. Buying bandwidth without that person produces an unfinished project, and we would rather you did not buy it from us on that basis.
People Also Ask
Is there a free alternative to Similarweb?
For the traffic-estimation job specifically, no — panel data is expensive to collect and nobody gives it away. For most of the questions people use Similarweb to answer, yes: Tranco for domain popularity, Chrome UX Report for real-user presence and performance, Cloudflare Radar for internet-wide trends, Google Trends for demand. All free, all measurements rather than models.
How much does Similarweb cost?
They do not publish it. The pricing page offers self-service packages for individuals and directs businesses to a sales conversation for a custom package. Any specific figure you find online comes from a third party rather than the vendor, which is why it is worth knowing what the published alternatives charge before you take that call.
Is Semrush or Ahrefs a better Similarweb replacement?
Depends on the job. Semrush is closer on total-traffic estimation because it operates its own clickstream data business. Ahrefs is stronger on backlinks and organic search traffic estimation and starts far cheaper, at $29/mo. If you want a rough answer to "how big is this site", lean Semrush; if you want "what is this site winning in search", lean Ahrefs.
How accurate are Similarweb traffic estimates?
They are model outputs with real error bars, most accurate for large consumer sites in well-panelled markets and least accurate for small, B2B, or non-English sites. Compare any two vendors on a mid-sized domain and the disagreement is usually visible. Use them ordinally and trust trends more than levels.
Can I scrape traffic data instead of paying for a tool?
No. Traffic volume, bounce rate and session duration require observing users, and users are not on the pages you crawl. Scraping gives you what is publicly visible — prices, catalogues, rankings, job postings, reviews — which is valuable and complementary, but it is not a substitute for panel data.
What is the cheapest way to track competitors?
Free sources for scale and demand, plus one paid SEO tool for keyword-level detail. Tranco, CrUX and Google Trends cost nothing; Ahrefs Starter at $29/mo or Serpstat Individual at $50/mo covers the rest for a single user. That combination handles most small-team competitive research for under $50 a month.
Do I need proxies for competitive intelligence?
Only if you are collecting the data yourself and at enough volume that a single address gets rate-limited, or if you need to see region-specific pricing and content. For a few hundred requests a day from one location you do not need them. We sell them and we would still rather you started without them and added them when you hit an actual wall.
Which Similarweb alternative has the best free tier?
Ahrefs offers a free tier for your own verified site, and Semrush has a free plan with limited daily lookups. Neither gives meaningful competitor traffic data. For genuinely useful free competitive data you are better served by CrUX and Tranco than by any vendor's free tier.
Wrapping Up
The right way to shop for a Similarweb alternative is to stop treating it as one product. It is four, and the alternative that beats it on one of them will usually be beaten by it on another.
If you need search-derived competitive research, the published-price tools do that job better and cheaper — from $29/mo with Ahrefs, $50/mo with Serpstat, $139/mo with Semrush, all verifiable on the vendors' own pages rather than requiring a sales call. If you need relative scale, real-user performance, or market demand, the free sources are more defensible than any paid estimate, because they are measurements rather than extrapolations. And if you need first-party observation of what competitors are actually doing — prices, catalogues, hiring, rankings — that is a pipeline you build, with the ongoing maintenance cost that implies.
What none of them gives you cheaply is the thing Similarweb is genuinely best at: an estimate of how many people visit somebody else's website. That number comes from a panel, panels are expensive, and no amount of clever tooling routes around it. If that number is your deliverable, budget for it. If it is not, you are probably paying for a bundle to get one report, and there is a better arrangement available.
