Company lists · Data refreshed September 2026

Top 25 Door security and access control companies worldwide

Name: Door security and access control companies worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 15,705 companies tracked

RevenueBase identified 15,705 door security and access control companies worldwide as of September 2026 and tracks 174,248 professional contacts across them, including 43,730 with verified work emails. The United States is the largest market and Sao Paulo the largest hub.

This list covers door security and access control companies worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026. Country and city lists for door security and access control companies follow the table.

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 HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review

15,705Companies

174,248Contacts tracked

43,730Verified emails

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The 25 largest door security and access control companies worldwide

Ranked by team size

Top 25 of 15,705 door security and access control companies worldwide, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to door security and access control companies: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Assa Abloy Group	Indirect evidence	Stockholm, SwedenHQ checked Sep 28, 2026	10001+	6,268 contacts →
	Indirect evidence “Let’s create a safer and more open world – together!” Source: RevenueBase Database · checked Sep 28, 2026
2	Allegion	Partial evidence	Dublin 7, IrelandHQ checked Sep 28, 2026	10001+	3,024 contacts →
	Partial evidence “Allegion (NYSE: ALLE) is a global pioneer in seamless access, with leading brands like CISA®, Interflex®, LCN®, Schlage®, SimonsVoss® and Von Duprin®.” Source: RevenueBase Database · checked Sep 28, 2026
3	Automated Systems Design, INC	Indirect evidence	Alpharetta, GA, United StatesHQ checked Sep 28, 2026	n/a	2,678 contacts →
	Indirect evidence “Since 1987, Automated Systems Design, Inc.(ASD®) a five-time Inc.” Source: RevenueBase Database · checked Sep 28, 2026
4	Chamberlain Group	Partial evidence	Oak Brook, United StatesHQ checked Sep 28, 2026	5,001-10,000	2,105 contacts →
	Partial evidence “Chamberlain Group (CG) is a global leader in intelligent access and Blackstone portfolio company.” Source: RevenueBase Database · checked Sep 28, 2026
5	HUF Group	Indirect evidence	Velbert, GermanyHQ checked Sep 28, 2026	5,001-10,000	2,048 contacts →
	Indirect evidence “The first impression counts.” Source: RevenueBase Database · checked Sep 28, 2026
6	DH Pace Company, INC	Indirect evidence	Olathe, KS, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,648 contacts →
	Indirect evidence “The DH Pace Company, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
7	DSI Security Services	Partial evidence	Dothan, AL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,190 contacts →
	Partial evidence “DSI Security Services offers armed and unarmed uniformed security guard services.” Source: RevenueBase Database · checked Sep 28, 2026
8	Titan Security Group	Partial evidence	Chicago, IL, United StatesHQ checked Sep 28, 2026	1,001-5,000	1,138 contacts →
	Partial evidence “At Titan Security Group, we understand that each client is unique, with specific security needs shaped by the type of property and its location.” Source: RevenueBase Database · checked Sep 28, 2026
9	Gunnebo	Strong evidence	Gothenburg, SwedenHQ checked Sep 28, 2026	1,001-5,000	910 contacts →
	Strong evidence “Gunnebo is a global leader in security solutions, offering innovative products and services to control the flow of people and to protect valuables from burglary, fire and…” Source: RevenueBase Database · checked Sep 28, 2026
10	Strong Segurança, S.A	Partial evidence	Amadora, PortugalHQ checked Sep 28, 2026	5,001-10,000	893 contacts →
	Partial evidence “Security Company Electronics developers Systems integrator” Source: RevenueBase Database · checked Sep 28, 2026
11	Security 101	Partial evidence	West Palm Beach, FL, United StatesHQ checked Sep 28, 2026	501-1,000	849 contacts →
	Partial evidence “Security 101® is a nationwide leader in designing, installing, and maintaining advanced security systems tailored to the unique needs of organizations of all sizes.” Source: RevenueBase Database · checked Sep 28, 2026
12	Chubb Fire & Security Canada	Partial evidence	Mississauga, ON, CanadaHQ checked Sep 28, 2026	1,001-5,000	759 contacts →
	Partial evidence “Chubb provides an unparalleled portfolio of security and life safety solutions to Canadian institutions, businesses and residences.” Source: RevenueBase Database · checked Sep 28, 2026
13	Assa Abloy Door Security Solutions - US	Partial evidence	New Haven, CT, United StatesHQ checked Sep 28, 2026	5,001-10,000	736 contacts →
	Partial evidence “Combining the expertise of the industry’s most knowledgeable door opening experts with a comprehensive product offering of leading door and hardware brands, the consultative…” Source: RevenueBase Database · checked Sep 28, 2026
14	Kastle Systems	Indirect evidence	Falls Church, VA, United StatesHQ checked Sep 28, 2026	501-1,000	686 contacts →
	Indirect evidence “Kastle is a leading provider of property technology solutions, protecting commercial real estate, multi-family residential, global enterprises, educational institutions and…” Source: RevenueBase Database · checked Sep 28, 2026
15	Skidata	Indirect evidence	Grödig, AustriaHQ checked Sep 28, 2026	1,001-5,000	686 contacts →
	Indirect evidence “We change the world of welcoming people.” Source: RevenueBase Database · checked Sep 28, 2026
16	Securiton AG	Partial evidence	Zollikofen, SwitzerlandHQ checked Sep 28, 2026	501-1,000	542 contacts →
	Partial evidence “Securiton AG has been a leading manufacturer and installer of alarm and security systems since 1948 and is part of the Swiss Securitas Group.” Source: RevenueBase Database · checked Sep 28, 2026
17	Kingalarm Systems	Partial evidence	Kingston 5, JamaicaHQ checked Sep 28, 2026	1,001-5,000	542 contacts →
	Partial evidence “KingAlarm Systems began operations in March and, in a relatively short time, has become the largest Electronic Security Company not just in Jamaica but the entire Caribbean…” Source: RevenueBase Database · checked Sep 28, 2026
18	Tech Systems Inc. TSI	Indirect evidence	Buford, GA, IndiaHQ checked Sep 28, 2026	501-1,000	527 contacts →
	Indirect evidence “Since 1987, Tech Systems, Inc.” Source: RevenueBase Database · checked Sep 28, 2026
19	Assa Abloy Brasil	Partial evidence	Diadema, BrazilHQ checked Sep 28, 2026	1,001-5,000	525 contacts →
	Partial evidence “O Grupo ASSA ABLOY é líder mundial na fabricação e fornecimento de soluções completas para controle de acesso e segurança, e dedica-se à satisfação das necessidades dos usuários…” Source: RevenueBase Database · checked Sep 28, 2026
20	2n	Strong evidence	Prague 4, Czech RepublicHQ checked Sep 28, 2026	501-1,000	478 contacts →
	Strong evidence “Global leader in IP access control, creator of high end video-intercoms, smart readers and lift solutions.” Source: RevenueBase Database · checked Sep 28, 2026
21	Laforce	Strong evidence	Green Bay, WI, United StatesHQ checked Sep 28, 2026	501-1,000	447 contacts →
	Strong evidence “Your door opening specialist for life safety and security." Since its establishment in 1954, LaForce, LLC has grown to become one of the largest distributors of doors, frames…” Source: RevenueBase Database · checked Sep 28, 2026
22	The Cook & Boardman Group, LLC	Partial evidence	Winston-Salem, NC, United StatesHQ checked Sep 28, 2026	1,001-5,000	445 contacts →
	Partial evidence “Established in 1955, The Cook & Boardman Group is the nation’s premier provider of architectural doors and frames, door hardware and related building specialty products in…” Source: RevenueBase Database · checked Sep 28, 2026
23	Napco Security Technologies	Partial evidence	Amityville, NY, United StatesHQ checked Sep 28, 2026	501-1,000	427 contacts →
	Partial evidence “NAPCO Security Technologies (NASDAQ: NSSC) is one of the world's leading manufacturers of technologically advanced electronic security equipment including intrusion and fire alarm…” Source: RevenueBase Database · checked Sep 28, 2026
24	Faac Simply Automatic	Partial evidence	Zola Predosa, ItalyHQ checked Sep 28, 2026	1,001-5,000	420 contacts →
	Partial evidence “Soluzioni di automazione per accessi veicolari, ingressi pedonali automatici, cancelli, porte, barriere e dissuasori per uso residenziale, commerciale e industriale.” Source: RevenueBase Database · checked Sep 28, 2026
25	Digital Monitoring Products	Strong evidence	Springfield, MO, United StatesHQ checked Sep 28, 2026	201-500	402 contacts →
	Strong evidence “DMP specializes in delivering innovative security solutions, including burglary, fire, access control and video security products.” Source: RevenueBase Database · checked Sep 28, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: door security and access control companies. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names door security and access control companies.
Partial evidence: Its own public description names part of door security and access control companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name door security and access control companies. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 15,705 door security and access control companies worldwide

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Door security and access control companies worldwide at a glance

As of Sep 28, 2026

25.1%Verified-email coverage

11.1Average contacts per company

1-10Median size (employees)

1.5%Largest-city concentration · Sao Paulo

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

7,966

11-50

5,449

51-200

1,541

201-500

329

501-1,000

112

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among door security and access control companies, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

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.
Coverage: Every country. Country and city lists for door security and access control companies are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “door security and access control companies”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names door security and access control companies), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among door security and access control companies, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 43,730 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Door security and access control companies by location

51 lists · largest first

Every Door security and access control companies list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names door security and access control companies, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many door security and access control companies are there worldwide?

RevenueBase identified 15,705 door security and access control companies worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Assa Abloy Group, headquartered in Stockholm, tops this list with the largest team on record.

Which country has the most door security and access control companies?

The United States leads with 2,511 companies, followed by the United Kingdom (1,569) and Brazil (1,148). Every door security and access control companies list by country and city is linked on this page.

Which city has the most door security and access control companies?

Sao Paulo leads with 232 headquartered companies, followed by London (167) and Dubai (89).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 43,730 verified decision-maker contacts tracked across these 15,705 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 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.