Desktop Alert is a best-of-breed IP-Based alert technology which provides seamless integration with enterprise-class federated environments and shares communications and commands using standardized protocols such as XML and HTML. Some of the services offered by the company are common alerting protocol, instant messaging, video scribes and secure hosted solution.

DetectaChem is a privately-held company and manufacturer of the rapidly deployable, handheld, intelligent, and easy-to-operate detection system called the Seeker. The Seeker enables threat detection for safety and security operations throughout the world. Located in Houston, Texas USA, DetectaChem is a leading global provider of portable trace detection technology for both government and civilian applications.

Deterrent Technologies was founded in 1982, providing integrated electronic security systems, design, installation and service. They offer services to a vast variety of corporations, including pharmaceutical, financial, telecommunications, manufacturing and real estate sectors.

Detrios designs, delivers and supports integrated access control and business system solutions to meet the toughest challenges.

Dev Technology Group is a WOSB, SDB delivering mission-critical applications and systems. The USA based company provides broad range IT services, with specialisation in web-based application development and system modernisation, database consulting services, biometric capture and integration solutions, and BMC Remedy and infrastructure management solutions.

Developing Solutions is focused on protocol development, test, and traffic analysis. They have developed dsTest, a software platform for the rapid deployment of protocols stacks, intended for performance and functional test.

DevelopIntelligence provides technical training for software developers and related talent in more than 300 subject areas. They help enterprise organisations onboard, upskill and reskill tech talent with programmes customised to the stack, culture, and goals.

deView electronics is a manufacturer of CCTV cameras, IP technologies and LCD panels located in Lewisville Texas.

Devo is the only cloud-native logging and security analytics platform that releases the full potential of your data to empower bold, confident action. With an unrivaled scale to collect all of your data without compromise, speed to give immediate access and answers, and clarity to focus on the signals that matter most, Devo is an ally in protecting an organisation today and tomorrow.

DH Vision is a diversified manufacturer of low voltage video surveillance equipment and accessories. Their primary product lines include cutting edge technology and overall reliability. All of their high quality Uniview and Dahua brand DVRs, NVRs, HD-CVI cameras, and IP cameras are backed by a 3-year warranty. DH Vision believes that being able to provide the best security footage to end users will keep the streets, houses, and businesses safer.

DH2i Company is a provider of multi-platform Software Defined Perimeter and Smart Availability software for Windows and Linux. DH2i software products DxOdyssey and DxEnterprise enable customers to create an entire IT infrastructure that is “always-secure and always-on.”

Dial-N-Document is web-based documentation system provider that interfaces with services for a secure Electronic Visit Verification (EVV) solution. Dial-N-Document provides accurate time & attendance, biometric voice verification, Near Field Communication technology etc.

Dialogic has been serving both the enterprise and service provider markets. Dialogic also develops technologies that enable operators to give their subscribers a reliable, seamless, and extremely enjoyable communications experience across countless devices connected on a wide variety of networks.

Dictograph is a 20-years old locally owned and operated security company providing a wide range of services for their clients. With 24/7 Dispatch, Dictograph's Professional trained Guards and Patrol service can respond to any need at any time in the Tucson and surrounding areas.

Digi Security Systems is a division of RAE Corporation based in Oklahoma. Digi designs, builds and installs custom Video Surveillance, Electronic Access Control, Intrusion Detection, Burglar & Fire solutions

Digi-Key Corporation is one of the fastest growing distributors of electronic components in the world. The company has been committed to offering the broadest selection of in-stock electronic components including access control systems, as well as providing the best service possible to its customers, aiding engineers through the entire design process, from Prototype to Production.

DigiBird manufactures an extensive line of Video Wall Controllers and Digital Matrixes. They meet the demands of commercial and high-end residential markets with their specialisation in ProAV Solutions, Digital Signage Solutions, Video Wall Solutions, Video Wall Controller, Hybrid Matrix Switchers, Edge Blender, Seamless LCD, Control/Command Room Solutions, and Creative video wall.

DigiCert is a global provider of high-assurance digital certificates. The company simplifies SSL/TLS and PKI, and provide identity, authentication, and encryption solutions for the web and the Internet of Things. DigiCert specialises in providing solutions required dealing with threats and securing identities across a network.

Since its first major cabling installation in 1994, Digicom, Inc. quickly established itself as a prominent regional installer of data, voice and video infrastructures. Digicom, Inc. has also built a quality reputation as a Hybrid Telephony, Voice Mail, VoIP and SIP Systems Integrator and also provides the design and installation of video and sound communication products and services.

DigiFlight accelerates mission success for its government and commercial customers by leveraging innovative ideas and technologies that embrace the competitive landscape surrounding Cybersecurity, Information Technology, Aerospace, and Training.

DIGIOP was one of the first, and remains one of the few, VMS solutions to deliver seamless integration of video and external data on a single platform. Introduced in 2000, the DIGIOP software platform was developed with the vision of extending the value of video beyond the traditional surveillance benefits of loss prevention, security and risk management.

Digital Air Control, Inc. is a security integrator in Texas, USA. The company specialises in building automation and energy management, security access control and intrusion detection, laboratory airflow and control systems, security video surveillance and integration, adjusting and balancing, structured cabling, life cycle services etc.

Digital Ally is a leading provider of advanced mobile video systems, including fleet video event data recorders, law enforcement in-car and other vehicular video systems, wearable video systems and flashlight video systems, as well as advanced LIDAR speed enforcement systems.