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View Barrier Security Services's top competitors like ADT, AVS Security Systems, and Control Risks.

ADT
ADT is the most trusted name in smart home security, helping protect and connect what matters most at home and beyond. When Every Second Counts, Count on ADT đź’™.
Boca Raton, Florida, US
Public
$5.1B Revenue
https://www.adt.com/
26.1K Employees
ADT Ticker
G4S
G4S is the International business of Allied Universal®, the world’s leading security and facility services provider and trusted partner to more than 400 of the Fortune 500. Allied Universal® delivers unparalleled customer relationships, innovative solutions, cutting-edge smart technologies and tailored services that enable clients to focus on their core businesses. With operations in over 100 countries and territories, Allied Universal is the third largest private employer in North America and seventh in the world. Annual revenue is approximately $23 billion. There is no greater purpose and responsibility than serving and helping to safeguard customers, communities and people. For more information, visit g4s.com.
UK
Public
$20B Revenue
http://www.g4s.com
118.5K Employees
LSE:GFS Ticker
Transnet SOC Ltd
As the custodian of ports, rail and pipelines, Transnet’s objective is to ensure a globally competitive freight system that enables sustained growth and diversification of the country’s economy. As a state-owned company, Transnet continues to leave an indelible mark on the lives of all South Africans. With a geographical footprint that covers our entire country, Transnet is inextricably involved in all aspects of life in South Africa. Through the Transnet Foundation - which is the Corporate Social Investment arm of Transnet - we have invested time and money in several diverse programmes around the country that provide much-needed succour to our communities. Looking ahead, Transnet is focused on modernizing infrastructure, driving growth, and enhancing efficiency through strategic partnerships. Our vision is clear: to contribute meaningfully to South Africa’s economic aspirations through sustainable growth and modernization.
Johannesburg, ZA
Private
$4.4B Revenue
http://www.transnet.net
28K Employees
G2 Leader Summer 2026 G2 Best Est ROI Mid-Market Summer 2026 G2 Easiest Admin Mid-Market Summer 2026 G2 Most Implementable Summer 2026 G2 Best Results Mid-Market Summer 2026 G2 Lead Capture Mid-Market Summer 2026 Inc Fastest Growing Private Companies 2026 Inc Best Workplace 2026
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