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Lookalikes · Data refreshed October 2026

25 Five Nines lookalikes

Compiled by the RevenueBase Data Team Data refreshed Oct 29, 2026 6134 matching companies

Looking for Five Nines lookalikes, Five Nines competitors or Five Nines alternatives? The RevenueBase company graph holds 6134 companies that do what Five Nines does, matched at 85%+ measured description similarity (RevenueBase, October 2026). The 25 largest are ranked below by team size; across all 6134 matches RevenueBase tracks 117,450 professional contacts, including 36,786 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 Five Nines and ranks them by company size. Data current as of October 29, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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 Oct 29, 2026 Match quality audited by blind human judging

Reference company

Five Nines

“Five Nines est née en 2019 d’un constat simple, celui d’un manque crucial de compétences et d’expérience dans la sécurisation de la transformation digitale des entreprises.”

11-50Employees
24Contacts tracked
10Verified emails
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The 25 largest Five Nines competitors and alternatives

Ranked by team size
Top 25 of 6134 companies matching Five Nines at 85%+ description similarity, ranked by team size. Similarity is each company's measured match to Five Nines (100% = identical). Data refreshed Oct 29, 2026.
#CompanyHQEmployeesSimilarityVerified emails
1Private Sectorn/an/a86%3 contacts →
2SophosAbingdon, GB5,001-10,00088%2,743 contacts →
3Arctic WolfEden Prairie, US1,001-5,00088%1,928 contacts →
4OPTIVLeawood, US1,001-5,00090%1,342 contacts →
5Guidepoint SecurityReston, US1,001-5,00089%863 contacts →
6Ensign InfosecuritySingapore, SG501-1,00086%231 contacts →
7CyderesKansas City, US1,001-5,00086%499 contacts →
8LevelblueDallas, US1,001-5,00087%445 contacts →
9SISABengaluru, IN201-50087%260 contacts →
10I-TracingCourbevoie, FR1,001-5,00091%399 contacts →
11Group-IbSingapore, SG501-1,00087%337 contacts →
12Ultraviolet CyberMclean, US501-1,00091%270 contacts →
13AdvensParis, FR501-1,00087%315 contacts →
14WithsecureHelsinki, FI501-1,00088%276 contacts →
15Paramount Computer SystemsAE201-50089%120 contacts →
16own.securityParis, FR51-20092%23 contacts →
17SecurityhqGb, GB501-1,00088%283 contacts →
18Palo Alto Networks Unit 42Santa Clara, US5,001-10,00086%316 contacts →
19ProtechmanizeThane, IN501-1,00087%71 contacts →
20Aujas CybersecurityCupertino, US1,001-5,00088%9 contacts →
21Secure Soft S.A.CSantiago De Surco Lima, PE51-20086%88 contacts →
22PT Itsec Asia TBKJakarta Selatan, ID201-50085%53 contacts →
23SafewaySao Paulo, BR201-50089%10 contacts →
24Acpl SystemsGurgaon, IN201-50087%196 contacts →
25Kudelski SecurityCheseaux, CH201-50089%194 contacts →

Showing the 25 largest of 6134 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 Smart Search, 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 Five Nines, 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 Five Nines 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 October 29, 2026. Lists refresh periodically as the graph is re-checked.

Frequently asked

What are Five Nines lookalikes?

Five Nines lookalikes are companies that closely resemble what Five Nines 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 Five Nines shown as a percentage.

What companies are similar to Five Nines?

The largest companies similar to Five Nines are Private Sector, Sophos, Arctic Wolf and OPTIV. The table above shows the 25 largest of the 6134 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 Five Nines'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 36,786 verified emails and direct dials tracked across all 6134 matched companies.

Who are Five Nines's biggest competitors?

The largest Five Nines competitors by measured business-description similarity are Private Sector, Sophos, Arctic Wolf and OPTIV. Every company here does what Five Nines does at 85%+ similarity, ranked by team size.

What are the best Five Nines alternatives?

The closest Five Nines alternatives are the companies whose own business descriptions match Five Nines'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 October 29, 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 Smart Search, 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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