Best Physical Security Services Companies in Texas, United States
The 92 best Physical Security Services companies in Texas, United States in 2026, ranked by funding and momentum. Funding, investors, founders, valuation, tech stack and live signals. Top: Dowley.
Ranked: Best Physical Security Services companies in Texas
| # | Company | Disclosed funding | Last round | Stage | Founder | Founded | Tech stack | Patents & IP focus | Recent signals |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Dowley Advanced security solutions provider for critical infrastructure and commercial markets | $20M | 95 mo ago | Series A | Mark Davis President and Chief Executive Officer (CEO) | 2006 | — | — | — |
| 2 | Sentryinteractive Provider of readerless NFC mobile access software for access control systems | $11M | 13 mo ago | Series A | Joe Caldwell Founder | — | WordPressMySQLPHP+28 | — | — |
| 3 | SiteOwl Provider of industrial electronic security system management services | $4M | 41 mo ago | Acquired | Joseph Ndesandjo Founder & CEO | 2019 | — | — | — |
| 4 | Geospace Technologies Manufacturer of cables and marine seismic products | $3M | 109 mo ago | Public | Walter Wheeler CEO & President | 1980 | WordPressApple iCloud MailTypeScript+32 | 37 patents Seismic sensing hardware—low‑power satellite‑timed acquisition, micro‑geophones, and rugged connectors. | — |
| 5 | KYKS Provider of safety security tools for school and other transportation system | $25K | — | Seed | Tabatha Barron Founder | 2014 | — | — | — |
| 6 | Automatic Fire Protection Provider of innovative and industry-leading fire safety and fire suppression solutions | — | 24 mo ago | Late Stage | Mike Pecoy CEO | 1970 | WordPressApple iCloud MailMicrosoft 365+27 | — | 2 job openings |
| 7 | 3Sixty Integrated Provider of commercial security services | — | — | Acquired | — | 2002 | WordPress Block EditorWordPressSentry+24 | — | 1 job opening |
| 8 | A1 Security Cameras Provider of security cameras | — | — | Unfunded | Mehmet Buyukozer Founder & CEO | 2007 | Cart FunctionalityBigCommerceApple iCloud Mail+30 | — | — |
Top 6 Physical Security Services companies in Texas
#1
Series A · Austin, Texas · 18 employees$10.7Mraised▾
Provider of readerless NFC mobile access software for access control systems. This software allows users' mobile phones to function as NFC readers, eliminating the need for hardware upgrades. It integrates with existing physical access control systems and various platforms, offering seamless and secure entry. The software is scalable, deployable remotely, and utilizes NIST-compliant security measures, including high-level encryption and access restrictions. It supports both mobile and physical credential management, unifying access control within a single system. The solution is designed for easy integration into various applications, including building management and tenant platforms.
#2
Acquired · Austin, Texas · founded 2019 · 15 employees$4Mraised▾
Provider of industrial electronic security system management services
- Dec 2022Series A$4M
#3
Series A · Houston, Texas · founded 2006 · 25 employees$19.8Mraised▾
Advanced security solutions provider for critical infrastructure and commercial markets. The company is a full-service technology provider specializing in electronic security solutions. They offer services such as managed detection and response, proactively hunting threats across networks, endpoints, cloud, and hybrid environments. Their expertise extends to fire and safety, providing life safety solutions and intrusion detection systems. They offer professional monitoring services available around the clock. Video surveillance systems and solutions help detect threats, protect lives and assets, enhance investigative capabilities, and improve response and operational efficiency. They focus on delivering tailored services to meet business demands.
- Jul 2018Series A$2.4M
- Feb 2016Series A$3.6M
- May 2014Conventional Debt$1.5M
- Mar 2012Series A$4.4M
#4
Public · Houston, Texas · founded 1980 · 650 employees$3.4Mraised▾
Manufacturer of cables and marine seismic products
- May 2017Post IPO$3.4M
#5
Seed · Pearland, Texas · founded 2014 · 5 employees$25Kraised▾
Developer of a child safety software and hardware platform created to increase child safety during school transportation. The company's platform utilizes a radio-frequency identification system tailor-made for each child to send text alerts to the appropriate teachers, administrators, parents, and guardians informing them a child is on the way or has arrived at the correct destination and if a child is not at the correct location, enabling parents to get improved communication between the organization and child and increase efficiency and accountability while minimizing the risk of a lost child.
- Seed$25K
#6
Late Stage · San Angelo, Texas · founded 1970 · 148 employees—raised▾
Automatic Fire Protection, Inc. is a Texas-based premier fire protection contractor offering a range of services including fire sprinkler systems and fire extinguishers. With over 50 years of experience, they continue to protect lives and property with their comprehensive solutions.
Funding & investor landscape
Notable founders
Market landscape — 10 sub-themes by coverage
Share of Physical Security Services coverage by sub-theme.
Regulatory-risk over time rising
Funding & growth over time
funding rising · growth rising
Common questions
Rohit lives in the feed. He covers what's moving right now — the funding rounds, launches and shifts breaking across the trade press — and ties them back to where the sector is heading.