API Documentation

Domain Similar API

Find similar companies and competitor domains based on any website domain via our RESTful API.

Domain Similar API

LIVE

Company domain

Real API data no signup required

cURL

curl --request GET \
  --url 'https://api.tomba.io/v1/domain-similar?domain=stripe.com' \
  --header 'X-Tomba-Key: ta_xxxxxxxxxxxx' \
  --header 'X-Tomba-Secret: ts_xxxxxxxxxxxx'

200400429

{
  "data": [
    {
      "website_url": "hunter.io",
      "name": "Hunter",
      "industries": "Information Technology and Services"
    },
    {
      "website_url": "skrapp.io",
      "name": "Skrapp.io",
      "industries": "Information Technology and Services"
    }
  ]
}

Based on verified reviews

The Most Reliable Domain Similar API API

Tomba has the largest B2B email crawler on the web. We process billions of pages monthly so you always get the freshest, most accurate data.

2B+

Pages crawled monthly

450M+

Verified B2B emails

80M+

Domains indexed

Ranked in benchmark

81%

Email coverage

<5%

Bounce rate

<200ms

API response

99.9%

Uptime SLA

42M+

Tech-indexed sites

150K+

Professionals

Independent 5,000-Lead Benchmark

Same input file, same conditions, every provider. Raw results, no spin.

View raw data Data updates Robots policy

Tomba.io

4,015

Anymailfinder

3,875

Findymail

3,757

GetProspect

3,096

Skrapp

2,142

Hunter

1,882

VoilaNorbert

1,800

Snov

1,007

Prospeo

846

More Data, Less Money No One Comes Close

Every plan includes free verification credits, phone data, and credits valid for 12 months.

Basic

$49 /mo

5,000 total credits

2,500 finder + 2,500 Free Verification

Integrate Domain Similar API in Your Language

Install Tomba in your language. 10 official SDKs, all open-source on GitHub.

composer require tomba-io/php

Ruby

gem install tomba

go get github.com/tomba-io/go

luarocks install tomba

install.packages("tomba")

Elixir

{:tomba, "~> 1.0"}

Full API documentation View on GitHub MCP Server

Domain Similar API API Features

Similar Domains

Find companies with similar products, services, and target markets to any given domain.

Company Data

Each similar domain includes company name, industry, size, and location.

Website Info

Domain URL, description, and technology overlap for each match.

Relevance Score

Similarity scoring based on industry, content, technology, and audience overlap.

Competitor Discovery

Discover direct competitors and adjacent companies in the same market.

Bulk Available

Find similar domains for multiple queries via Bulk Similar Domain API.

Account-Based Marketing

Build lookalike audiences by finding companies similar to your best customers.

Real-Time Results

Fresh similarity analysis from our continuously updated 80M+ domain database.

Trusted Worldwide

Everyone is switching to Tomba.io

Join thousands of companies worldwide who trust Tomba for their email finding needs

Trusted by Developers Worldwide

Tomba.io is very fast with lots of features. I run leads from Apollo into Tomba and grab prospect info in record time. I'm saving at least 5 hours a week. No joke.

Julian M.

Account Executive, Insight

I've tested over a dozen email finder tools, and Tomba.io stands out as the best. It consistently delivers accurate results. The SDK and docs make integration fast.

Andrei Kholkin

Founder, Superpage.io

Stellar product and amazing support. I have tested many tools and this one is far superior by far. I highly recommend it.

Martin Ebongué

Entrepreneur, Genius Data Flow

Since years, Tomba has provided the most results per search, and it keeps getting better. It recently became one of the most feature-rich tools for our list building.