Free Similarweb alternative

Similarweb is a paid web intelligence platform that estimates traffic, audience, keyword and SEO data for any website, with self-service plans and custom business packages. SEO Skill is free: web tools for the everyday lookups, and your own Search Console, Google Analytics and keyword data in your AI agent.

Get started free

Run it in a terminal, then sign in with Google.

Or run it on your machine

Installs the CLI, signs you in and adds the skill to your agents. Site crawls and Bing data run this way, on your own machine. A crawl fetches many pages, and Bing blocks our hosted server.

At a glance

The four things most people compare first, from each product's own pages.

SEO Skill

Free use: Every on-demand tool, no usage cap
Paid: $50 a month per site, for the weekly audit
Works in web chat: Yes
Get started: Free web tools with no account, or one URL in your AI agent

Similarweb

Free use: 7-day trial, card needed
Paid: $99 a month (Competitive Intelligence)
Works in web chat: Yes, in Claude.ai and ChatGPT, but only on API-only, Business or Enterprise plans
Get started: Create an account

Free tools for the jobs you use Similarweb for

No account and no key. Each one opens in your browser.

Website traffic checker

Estimate a website's monthly organic traffic, ranking keywords, and position changes by country.

Open the website traffic checker

Competitor keyword research

See the keywords a competitor ranks for, or the sites that compete with any domain.

Open competitor keyword research

Domain Rating checker

Check Domain Rating by Ahrefs for any website.

Open the Domain Rating checker

Domain age checker

See when a domain was registered, when it expires and who its registrar is, read from the registry.

Open the domain age checker

Pick Similarweb if

From Similarweb's own pages.

you need traffic, audience and channel estimates for competitor sites you cannot see in your own analytics.
you want market research and competitive benchmarking, not only SEO.
you want AI brand visibility and ad intelligence in the same tool.
you are on a Business or Enterprise package and want that data in Claude or ChatGPT through its connector.

Pick SEO Skill if

Free SEO tools in your browser, and your own search data in your AI agent.

You want the everyday lookups for free: backlinks, Domain Rating, competitor keywords, SERPs and traffic estimates, with no account.
You want your AI agent to answer from your own Search Console and Google Analytics data, not only from an index estimate.
You already pay for keyword data: SEO Skill uses your own DataForSEO or Ahrefs key, so you pay that provider and nothing on top.
You want a weekly crawl, daily index checks and drop alerts for $50 a month per site, with no seats to buy.

Side by side

Every fact we compared, with Similarweb's taken from the sources at the end of this page.

SEO SkillSimilarweb

Get started

SEO Skill: Use the free web tools with no account. For your own data, add https://seoskill.dev/mcp to your AI agent and sign in with Google (read only).

Similarweb: Register with a business email or a Google account and start a 7-day free trial. The trial is tied to a subscription package: the card used at sign-up is charged automatically when the trial ends unless you cancel first. Business and Enterprise packages are bought through sales.

What it does

SEO Skill: Free web tools: backlink checker, Domain Rating, competitor keywords, SERP checker, traffic estimates, robots.txt, sitemap, schema and more. In your AI agent: Search Console reports (quick wins, low CTR, striking distance, content decay, cannibalization, traffic drops), page checks, index checks, before and after comparisons, and keyword research with your own key. A site crawler and internal links in the CLI.

Similarweb: Competitive intelligence (website performance, traffic and engagement, demographics, marketing channels), SEO intelligence (organic search overview, keyword research, rank tracker, site audit and backlinks), AI brand visibility with tracked prompts, and ad intelligence on the top self-service plan. Business packages add AI Studio, AI agents, data feeds and APIs. The Similarweb MCP server needs an API-only, Business or Enterprise plan.

Data

SEO Skill: Google Search Console, Google Analytics, URL Inspection, Clicky, and DataForSEO or Ahrefs with your own key. Bing Webmaster Tools in the CLI. Free Domain Rating by Ahrefs on research rows.

Similarweb: Similarweb traffic and audience estimates, Similarweb keyword and SEO data, AI brand visibility and AI traffic data, Ad intelligence data, Google Analytics 4 (connect your own site, public or private)

Where you use it

SEO Skill: Your browser for the web tools. Claude Code, Claude, ChatGPT, Codex, Cursor, VS Code, Gemini CLI, Windsurf, Le Chat and any remote MCP client for your own data.

Similarweb: Web app, Claude, ChatGPT, Cursor, Microsoft Copilot, Perplexity, Manus, Zapier, n8n

In Claude or ChatGPT on the web

SEO Skill: Yes

Similarweb: Yes, in Claude.ai and ChatGPT, but only on API-only, Business or Enterprise plans

Free

SEO Skill: Every on-demand tool, with no usage cap and no time limit.

Similarweb: No free plan. A 7-day free trial charges the card on file when it ends unless you cancel. Free data on similarweb.com is a high-level sample with no deeper drill-downs. Anyone can connect Google Analytics 4 to publicly verify their own site for free.

Paid plans

SEO Skill: The weekly site audit is $50 a month per site: weekly crawl, daily Google index checks, stored history, drop and return alerts, and a Monday email and webhook. Cancel any time.

Similarweb: Self-service (Entrepreneurs), 1 user each: Competitive Intelligence $99 a month, or $65 a month billed annually (3 months of history). Competitive Intel & SEO & AEO $199 a month, or $165 a month billed annually (6 months of history, 150 tracked prompts). Competitive Intel, SEO & AEO & Ads $325 a month, or $270 a month billed annually (6 months of history). Prices in USD. Business and Enterprise packages, the standalone API and MCP access are priced by sales.

Can it change your site

SEO Skill: Read-only Google sign-in. Your agent can start the paid audit for a site, which returns a Stripe Checkout link for you to open.

Similarweb: None stated. Similarweb reads and estimates data about websites.

Your data

SEO Skill: Search Console and analytics rows are fetched on each request and never stored, except what the paid weekly audit keeps for its sites. Your linked accounts and saved keys are kept, encrypted.

Similarweb: Not stated how long. Connecting GA4 lets Similarweb show your visits, pages per visit, visit duration, bounce rate and unique visitors, either publicly to all users or privately to your account. It does not change Similarweb's own estimates for your site.

History

SEO Skill: Google's 16 months, read live. With the weekly audit, crawl and index history for the sites you audit.

Similarweb: 3 months on Competitive Intelligence and 6 months on the other self-service plans. Business packages can add up to 37 months. Its about page cites 10 years of historical data.

Licence

SEO Skill: Hosted service, with the CLI and local MCP server open source (Apache 2.0)

Similarweb: Hosted service

Move from Similarweb in a few minutes

Nothing to migrate: SEO Skill reads your accounts live. When you are done, remove Similarweb from your agent and revoke its access.

Add SEO Skill to your agentUse the setup box above, or the steps for your client on the integrations page.
Check your access
Ask "list my Search Console properties". Every Google account you link shows up.
Add your research keySave a DataForSEO or Ahrefs key on your account page if you use keyword research.
Keep what you still need
Projects and history you built in Similarweb stay there. SEO Skill reads Search Console live, so you can run both while you decide.

More comparisons

Other ways to give your agent search data, next to SEO Skill.

AccuRanker

Free: No. Paid: $249 a month (Professional).

Free AccuRanker alternative

Ahrefs

Free: Free account, verified sites. Paid: $29 a month (Starter).

Free Ahrefs alternative

AnswerThePublic

Free: Free, 3 searches a day. Paid: US$20 a month (Starter).

Free AnswerThePublic alternative

Majestic

Free: Free account, limits not stated. Paid: $49.99 a month (Lite).

Free Majestic alternative

Questions about Similarweb

Not stated how long. Connecting GA4 lets Similarweb show your visits, pages per visit, visit duration, bounce rate and unique visitors, either publicly to all users or privately to your account. It does not change Similarweb's own estimates for your site. SEO Skill fetches your Search Console and analytics rows on each request and does not keep them, except for sites in its paid weekly audit, where it keeps the crawls, index checks with each page's clicks and impressions, and the issues list.