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Lookalikes · Data refreshed September 2026

8 Onesignal lookalikes

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 19 matching companies

Looking for Onesignal lookalikes, Onesignal competitors or Onesignal alternatives? The RevenueBase company graph holds 19 companies that do what Onesignal does, matched at 85%+ measured description similarity (RevenueBase, September 2026). The 8 largest are ranked below by team size; across all 19 matches RevenueBase tracks 662 professional contacts, including 284 with verified work emails.

Similarity is measured on what companies actually do, from their business descriptions rather than industry codes, and is shown per row as a percentage. This page keeps only companies at 85%+ measured similarity to Onesignal and ranks them by company size. Data current as of September 5, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list Similarity shown on every row Refreshed Sep 5, 2026 Match quality audited by blind human judging

Reference company

Onesignal

“OneSignal is the leading customer engagement platform for push, email, SMS/RCS, and in-app messaging.”

51-200Employees
191Contacts tracked
136Verified emails
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The 8 largest Onesignal competitors and alternatives

Ranked by team size
Top 8 of 19 companies matching Onesignal at 85%+ description similarity, ranked by team size. Similarity is each company's measured match to Onesignal (100% = identical). Data refreshed Sep 5, 2026.
#CompanyHQEmployeesSimilarityVerified emails
1customer.ioPortland, US201-50089%234
2RetenoWarsaw, PL11-5087%8
3KNOCKNew York, US11-5085%21
4PushpushgoKrakow, PL11-5086%14
5NotificareRotterdam, NL11-5088%3
6Go-Mailer LimitedLagos, NG1-1086%2
7PushengageWilmington, US11-5088%1
8Fotobom Media INCSan Francisco, US1-1086%1

Showing the 8 largest of 19 similar companies

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How similarity works

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
Matching
Companies are matched on what they actually do, as described in their own business descriptions, never on shared industry codes. The list keeps only matches at 85%+ measured similarity to Onesignal, and match quality is audited by blind human judging. Read the full methodology.
Ranking
Team size, largest first, among the matched companies: companies are ordered by the number of professionals RevenueBase tracks at each one. Each row also shows its measured similarity to Onesignal as a percentage.
Verification
Contact records re-verify on a rolling cadence rather than being scraped once and left to decay; each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 5, 2026. Lists refresh periodically as the graph is re-checked.

Frequently asked

What are Onesignal lookalikes?

Onesignal lookalikes are companies that closely resemble what Onesignal does and sells, based on each company's own business description. The table above ranks the closest matches by company size, with each company's similarity to Onesignal shown as a percentage.

What companies are similar to Onesignal?

The largest companies similar to Onesignal are customer.io, Reteno, KNOCK and Pushpushgo. The table above shows the 8 largest of the 19 matched companies, with each row's similarity shown as a percentage.

How is similarity measured?

Similarity scores how closely a company's business, as described in its own words, matches Onesignal's, shown as a percentage (100% = an identical description). The list keeps companies at 85% or above and ranks them by team size.

How do I get contacts at these companies?

A free RevenueBase account lets you run this exact search and work the top matches, verified emails and direct dials included. Upgrading unlocks the 284 verified emails and direct dials tracked across all 19 matched companies.

Who are Onesignal's biggest competitors?

The largest Onesignal competitors by measured business-description similarity are customer.io, Reteno, KNOCK and Pushpushgo. Every company here does what Onesignal does at 85%+ similarity, ranked by team size.

What are the best Onesignal alternatives?

The closest Onesignal alternatives are the companies whose own business descriptions match Onesignal's most closely, shown above with each one's similarity as a percentage and ranked by team size.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 5, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.

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