Tomba Similar Finder

Turn one great customer or competitor into a list of look-alike companies. Paste a list of domains and get the websites most similar to each one, with company name and industry, ready to export.

No Tomba account. No API key. No subscription. You pay $0.00312 per domain, and only when we find something.

Why teams choose this Actor

• Start in 30 seconds: Open the Actor, paste your domains, click Start. Nothing to sign up for
• Pay only for results: Domains with no similar websites, errors and invalid inputs are free
• $3.12 per 1,000 domains: One price per domain, however many look-alikes it returns. No monthly plan, no credits that expire
• Built for big lists: No rate limit. Up to 1,000 domains per run, processed in parallel
• Never pay twice: Domains you looked up in the last 24 hours come back from cache for free
• Clean input, clean output: Paste URLs or domains in any format; duplicates are removed automatically
• Export anywhere: Download as CSV, Excel or JSON, or send results straight to your CRM with Apify integrations

What you can do with it

Goal	How similar websites help
Clone your best customers	Feed in your top accounts and get look-alike companies to prospect next
Map your competition	Discover direct and indirect competitors you didn't know about
Find partners	Spot companies with similar audiences and business models
Expand to new markets	See who else serves the same market as the companies you already know
Research an industry	Build a list of players around a few well-known names

Quick start

1. Click Try for free
2. Paste your domains into Domains (for example stripe.com, hubspot.com)
3. Click Start, then download your results as CSV, Excel or JSON

That's it. No Tomba account or API key is needed.

Input

Field	Required	Default	Description
domains	Yes		Domains to find look-alikes for (up to 1,000). URLs like https://www.stripe.com/ are cleaned up
maxResults	No	50	Maximum number of similar-website rows for the whole run (up to 10,000)
maxConcurrency	No	10	How many domains to process at the same time (1–50)
maxRetries	No	3	How many times to retry a temporary failure (0–10)
useCache	No	true	Reuse results from your previous runs for free
cacheTtlHours	No	24	How long cached results stay valid (0 turns the cache off)

maxResults counts rows across all your domains. When it is reached the run stops, so raise it when you submit many domains.

{
    "domains": ["stripe.com", "hubspot.com", "notion.so"],
    "maxResults": 1000
}

Output

You get one row per similar website:

{
    "input_domain": "stripe.com",
    "similar_domain": "paypal.com",
    "company_name": "PayPal",
    "industries": "Financial Services",
    "website_url": "paypal.com",
    "source": "tomba_similar_finder",
    "charged": true,
    "cached": false
}

Field	Description
input_domain	The domain you submitted
similar_domain	The similar website found
company_name	Name of the company behind the similar website
industries	Industry of the similar company
website_url	Website of the similar company
source	Always tomba_similar_finder
charged	true if this lookup was billed
cached	true if this result came from the cache (free)
error	Why no similar websites were returned, if applicable

The dataset has three ready-made views: Overview, Detailed View and Successful Matches.

Pricing

$0.00312 per domain ($3.12 per 1,000). No subscription and no Tomba account needed.

You are only charged when Tomba returns a usable answer:

What happens	Charged
Similar websites found for the domain	Yes
No similar websites found for the domain	No
Invalid domain or any other error	No
Temporary failure (it is retried automatically)	No
Result served from the cache	No

You pay once per domain, whether it returns 3 or 30 similar websites. Every row shows charged and cached, so you always know what you paid for. To cap your spend, set Maximum cost per run in the run options: the Actor stops cleanly when the limit is reached.

Built for big lists

• No rate limit: up to 50 domains are processed at the same time
• Automatic retries: temporary failures are retried for you, and never billed
• Resumable: if a run is interrupted, it continues where it stopped without charging you again
• Cache: repeat lookups within 24 hours are free

Real-time API

Need results instantly inside your own app? This Actor also runs as a real-time API (Apify Standby mode): no run to start, no dataset to fetch, just an HTTP request that returns JSON in seconds. Pricing is the same.

curl "https://<your-standby-url>/?domain=stripe.com&domain=shopify.com&maxResults=20" \
  -H "Authorization: Bearer <YOUR_APIFY_TOKEN>"

You can also POST the same JSON input as a normal run:

curl -X POST "https://<your-standby-url>/" \
  -H "Authorization: Bearer <YOUR_APIFY_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"domains": ["stripe.com", "shopify.com"], "maxResults": 20}'

The response is { "items": [...] }, with the same rows as the dataset. Find your Standby URL and the full OpenAPI description in the API tab of this Actor.

Integrations

Run it on a schedule, call it from the Apify API, or connect it to Zapier, Make, Google Sheets, HubSpot, Slack and hundreds of other apps with Apify integrations. Webhooks let you trigger your own workflow as soon as a run finishes.

Tip: feed the similar_domain column into Tomba Domain Search to get the verified emails of the people at each look-alike company.

FAQ

Do I need a Tomba account or API key? No. Everything is built in. You only pay the per-domain price on Apify.

How much does it cost? $0.00312 per domain with results ($3.12 per 1,000). Domains with no results, errors and cached lookups are free.

How many domains can I analyze in one run? Up to 1,000 per run, processed in parallel. There is no rate limit.

Why did my run stop before all my domains were processed? maxResults (default 50) limits the total number of rows in the run. Raise it when you submit many domains.

What domain format should I use? Anything works: stripe.com, bbc.co.uk, subdomains like blog.stripe.com, www.stripe.com or https://stripe.com/pricing. We clean it up and remove duplicates.

Why are there no results for some domains? Very new or very niche websites may have no known look-alikes yet. You are not charged for them. Established companies give the best results.

What if my run is interrupted? It picks up where it stopped. Domains already processed are not charged again.

How do I limit what I spend? Set Maximum cost per run before you start. The Actor stops as soon as the limit is reached.

Support

Questions or feedback? We're happy to help:

• Email: support@tomba.io
• Live chat: on tomba.io during business hours
• Issues: use the Issues tab on this Actor's page

About Tomba

Founded in 2020, Tomba is a B2B data platform for finding, verifying and enriching business contacts. Our Email Finder, Domain Search and Email Verifier help sales and marketing teams reach the right people.