Most lists of Similarweb alternatives are wrong in the same way. They put tools next to each other that are not measuring the same thing, and the reader ends up buying an organic search tool to answer a question about total traffic.

Similarweb estimates how much traffic any domain gets, across every channel, whether or not you own it. Very few tools do that. Plenty of good tools do something adjacent and cheaper, and the useful version of this comparison is knowing which is which before you look at a price.

TL;DR

Similarweb restructured into Web Intelligence 4.0 packages: Competitive Intelligence, Competitive Intelligence and SEO, a Competitive Intelligence, SEO and PPC tier listed as coming soon, and Similarweb for Businesses with up to 37 months of historical data and API access. It does not publish tier prices, listing $125 a month as an entry point and routing everything else through sales. The closest genuine like-for-like is Semrush's Traffic and Market Toolkit at $289 a month billed annually, which analyses up to 100 competitors with worldwide data. SpyFu is the value pick at $29 a month billed annually, publishes all three tiers openly and gives 10 or more years of history from the Pro tier, but it is a paid and organic keyword competition tool rather than a total-traffic estimator. Ahrefs Starter is $29 a month and Lite is $129, and it estimates organic search traffic only. Cloudflare Radar Domain Rankings are free and derived from DNS queries to 1.1.1.1, but they give you a popularity ranking rather than a traffic number. Decide what you actually need to measure first, because the price range across these is roughly ten to one and the cheapest option answers a different question.

They are not all measuring the same thing

Similarweb estimates total traffic to any domain. All channels, not just search. That is the capability people are actually buying and it is the reason a straight feature swap usually disappoints.

Ahrefs estimates organic search traffic. It is excellent at that and it will not tell you how much of a competitor's traffic came from direct, paid social or a newsletter. If your question is "where does this company's demand come from", organic-only answers a fraction of it.

SpyFu maps paid and organic keyword competition. Again genuinely useful, and again a different question. It tells you what a competitor bids on and ranks for, not how many people visited.

Cloudflare Radar gives you a rank, not a number. Its Domain Rankings documentation explains the data comes from DNS queries to 1.1.1.1, Cloudflare's public resolver, with an ordered top 100 globally and per country updated daily, and unordered buckets from 200 up to 1,000,000 domains updated weekly. Above the top 100 you get a bucket, not a position.

So the honest shortlist depends on your question. Total traffic for any domain narrows the field to Similarweb and Semrush's Traffic and Market Toolkit. Everything else on this page is a cheaper tool for an adjacent job, which is often the right purchase once you know that is what you are doing.

The five alternatives worth considering

1. Semrush Traffic and Market Toolkit

The closest like-for-like. Its published pricing puts the Pro tier at $289 a month billed annually, covering traffic overview, market landscape, acquisition channel mix, top pages and conversions, competitor alerts and worldwide data, with up to 100 competitors to analyse. Add-ons are priced separately: Lead Generation at $90 a month, a Base Report at $10 and a Pro Report at $20. Choose it when you need channel mix for domains you do not own and you want a published price you can put in a budget. Use our Semrush pricing breakdown for how the toolkit sits against the wider platform.

2. SpyFu

The value pick, and the most transparent pricing in this set. Basic is $39 a month or $29 billed annually with one user, 10,000-row search results and exports, no historical data and no API. Pro with AI is $119 a month or $89 annually, adding unlimited results and exports, 10 or more years of historical data, API access with $40 of credits, and additional users at $30. The Team tier is $249 a month or $187 annually with five users and $100 of API credits. Every plan carries a 30-day money-back guarantee with no conditions. Choose it for competitive keyword and ad intelligence on a small budget; do not choose it expecting total traffic by channel.

3. Ahrefs

Starter is $29 a month with 100 monthly credits covering Site Explorer, Keywords Explorer, Site Audit, Rank Tracker, Web Analytics and the Social Media Manager, and Site Audit and Rank Tracker do not consume credits. Lite is $129 a month. There is also a free tier in Ahrefs Webmaster Tools for sites you verify. Choose it when the question is organic, which for a lot of B2B companies it honestly is. Do not choose it as a Similarweb replacement, because it will not see the channels Similarweb was bought for.

4. Cloudflare Radar Domain Rankings

Free, and the only genuinely free entry on this list that produces something defensible. Because it is built on DNS resolver queries rather than panel data or clickstream, it has a different bias to every commercial estimator here, which makes it a useful sanity check rather than a replacement. Use it to confirm a direction of travel before you pay anyone for a number.

5. Similarweb itself, on the right package

Worth restating as an option, because the 4.0 restructure means people who priced it two years ago are comparing against something that no longer exists. The current packages run Competitive Intelligence, Competitive Intelligence and SEO, a Competitive Intelligence, SEO and PPC tier described as coming soon, and Similarweb for Businesses with up to 37 months of history, API and MCP integration and audience insights. If the last quote you got was for the old structure, get a new one before you switch.

What they cost

The spread is roughly ten to one and the cheapest tools publish the most. SpyFu and Ahrefs both start at $29 a month and put every tier on the page. Semrush publishes $289 for the Traffic and Market Pro tier. Similarweb publishes $125 as an entry figure and sends the rest to sales.

Price transparency is a real buying criterion here, not a complaint. If you cannot build a budget from a website, you cannot compare shortlists without booking calls, and that alone rules some vendors out of some procurement processes.

Watch the seat and export limits rather than the headline. SpyFu Basic caps results and exports at 10,000 rows, which is the line most people actually hit. Ahrefs Starter runs on 100 monthly credits. Neither constraint appears in a price comparison.

Historical depth is where the money goes. SpyFu gives 10 or more years from the Pro tier at $89 a month annually. Similarweb for Businesses gives up to 37 months. If you are doing trend work rather than a snapshot, that difference matters more than the monthly figure.

Which one to actually pick

You need channel mix for domains you do not own, and you have budget: Semrush Traffic and Market, or Similarweb. These are the only two here doing the actual job. Semrush publishes a price, Similarweb does not, and that may decide it for you before any feature comparison.

You need competitive intelligence on a small budget: SpyFu. $29 a month billed annually with published tiers and a 30-day guarantee is the lowest-risk way to find out whether this category earns its place in your stack.

Your question is really organic: Ahrefs. Most B2B companies asking about a competitor's traffic are asking about search. If that is you, $29 a month buys a better answer to your actual question than $289 buys to a broader one.

You need one number to sanity-check a claim: Cloudflare Radar. Free, differently biased, and enough to tell you whether a vendor's estimate is in the right postcode.

You are renewing Similarweb: re-quote before you switch. The package structure changed and the comparison you did last time is against a product that no longer exists in that shape.

What none of these tools will tell you

Every one of these is an estimate. Nobody outside the company has its analytics. Two tools disagreeing by a factor of two on the same domain is normal, and the direction of travel is more reliable than the absolute number.

Small domains estimate badly everywhere. Below a certain traffic volume, panel and clickstream models have too little signal. If your competitors are small, expect all of these to be shaky and weight the ranking-based sources more heavily.

Channel labels are inferred, not observed. A tool telling you 40% of traffic is direct is telling you what it could not attribute elsewhere.

Buying data does not create a strategy. The reason to know a competitor's channel mix is to decide where you compete, and that decision is not in any of these products.

FAQ

What is the best free Similarweb alternative?

Cloudflare Radar Domain Rankings, which are free and built on DNS queries to Cloudflare's 1.1.1.1 public resolver. The trade is that you get a popularity ranking rather than a traffic number, with an ordered top 100 globally and per country and buckets from 200 to 1,000,000 domains above that. Ahrefs Webmaster Tools is free for sites you verify, but only for your own.

Is Semrush a good Similarweb alternative?

It is the closest like-for-like on this list. The Traffic and Market Toolkit at $289 a month billed annually gives traffic overview, acquisition channel mix, market landscape and up to 100 competitors with worldwide data, which is the same category of answer Similarweb provides. It also publishes its price, which Similarweb largely does not.

How much does Similarweb cost in 2026?

Similarweb does not publish tier prices for its Web Intelligence 4.0 packages. Its pricing page lists $125 a month as an entry figure for individuals and directs business and enterprise buyers to contact sales for a custom package. The business tier includes up to 37 months of historical data, API and MCP integration and audience insights.

Is SpyFu the same as Similarweb?

No, and this is the most common mistake in this category. SpyFu maps paid and organic keyword competition, so it tells you what a competitor bids on and ranks for. Similarweb estimates total traffic across all channels. SpyFu is cheaper and more transparent, but it will not answer a question about direct, referral or social traffic.

Can you get competitor traffic data for free?

Partly. Cloudflare Radar gives free rankings, and most paid tools offer a limited free view of a domain. What you cannot get free is reliable channel breakdown with history, which is the part these platforms actually charge for. Free sources are best used to check whether a paid estimate is plausible.

Which alternative has the longest historical data?

SpyFu, from the Pro tier at $89 a month billed annually, states 10 or more years of historical data. Similarweb for Businesses offers up to 37 months. If long-run trend analysis is the job rather than a current snapshot, that gap is the single biggest difference between the two.

Bottom line

Work out whether your question is about total traffic or about search, because that single answer removes most of this list. If it is total traffic across channels for domains you do not own, you are choosing between Similarweb and Semrush's Traffic and Market Toolkit, and Semrush publishing $289 while Similarweb routes you to sales is a genuine difference in how you buy. If it is really about organic, Ahrefs at $29 does the job for a tenth of that. If it is about paid and organic keyword competition, SpyFu at $29 publishes every tier and refunds you within 30 days if you were wrong. And whatever you end up paying for, treat the output as an estimate and check the direction against a differently-biased free source before you act on it.

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We are GROU, a B2B pipeline agency that runs lead generation, outbound, and LinkedIn content for clients across manufacturing, fintech, iGaming, software, and professional services. The fit guidance reflects our competitive research deployments between 2024 and 2026, anonymized to protect client confidentiality.

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