How to find similar websites: the short answer

How to find similar websites, in one line: enter the site's domain into a keyword overlap tool for search rivals, read Google's "vs" and "alternatives" suggestions for the brands buyers compare, and search for pages that mention two known peers together for the rest of the cluster.

The quickest data-backed route is seogeoaeo.ai's Competitor Finder, which lists up to 30 domains that rank for the same Google searches as the site you enter, for 38 credits a run.

Which method should I use?

It depends on what "similar" means to you.

• Same searches. You want sites that compete for the same Google traffic. Use a keyword overlap lookup.
• Same buyers. You want the brands customers weigh against each other. Use Google autocomplete, independent comparison articles and review directories.
• Same mentions. You want the sites that appear side by side in roundups and AI answers. Use co-citation searches and ask AI assistants.

Each gives a different list. That is expected, not an error.

How does a keyword overlap tool decide what is similar?

It takes every Google keyword the domain ranks for, compares that set with other sites, and ranks the sites that share the most. Competitor Finder adds one correction that makes the list usable: it looks at what share of each other site's keywords overlap. A site where 5% or more match is labelled a close competitor. Huge general sites, which share terms with almost everyone, are kept separate.

You can enter any public domain, yours or someone else's. Choose a Google country, because the lookup covers one at a time.

What will a keyword overlap tool miss?

Businesses that compete only offline or only through ads. Rivals in countries you did not pick. Competition at the level of one section of a site, since the lookup covers the whole domain. Traffic and keyword numbers are estimates, so compare sites with each other rather than quoting the figures.

Is there a free way?

Yes, for the buyer and mention views. Google's autocomplete costs nothing, and Google says its predictions come from real searches. Reading independent "alternatives" articles and running quoted searches for two brand names together are free too. They take longer and give you no numbers.

Can I just ask ChatGPT?

You can, and it is useful. Ask the same question in ChatGPT, Perplexity and Gemini, and repeat it. Keep the brands that appear every time and treat one-off names as weak. Look at the pages each answer cites, because they show where the model's idea of "similar" comes from.

Should I enter my own domain or the other site's?

Enter the site you want lookalikes for. If that is a rival, use its domain. A young site ranks for few keywords, so a lookup on it often returns mostly very large sites, and a bigger rival gives a fuller list.

Does Google still have a related: search?

Google's own page on search operators lists site:, filetype:, imagesize: and src:, and no related:. Do not plan around it.

What does it cost on seogeoaeo.ai?

Competitor Finder is 38 credits. Plans start at $29 a month for 2,000 credits, and each tool shows its price before running. A run that fails before giving a result is refunded. Monthly credits do not carry over.

When is something else the better answer?

When you want to watch rivals' positions every day. seogeoaeo.ai does one-off lookups and has no rank tracker, so a full suite with tracking suits that work better.

The short version

Decide what "similar" means, then use the matching method. For search rivals, run a lookup on seogeoaeo.ai with the other site's domain. For buyers and mentions, Google and a few AI assistants will get you most of the way for free.