Crypto Quantique is a company that specializes in quantum cyber security.

A company offering a platform for privacy and security for quantum cloud computing.

ID Quantique is a company developing quantum cybersecurity products, quantum scientific instrumentation, and quantum random number generation.

ISARA is a company developing quantum computer resistant software products founded in 2015 by Scott Totzke.

Qunnect is a quantum communication company that is developing room-temperature, portable, modular technologies to support optical, long-distance and quantum-secured communication.

QuSecure is a Menlo Park, California-based cybersecurity company that is developing quantum security applications, it was founded in 2019 by Skip Sanzeri, Rebecca Krauthamer, Dave Krauthamer, and Kosta Vilk.

InfiniQuant is a research team hosted in Christoph Marquardt’s Quantum Information Processing group at the Max Planck Institute for Science and Light.

Post-Quantum is a company that is developing quantum-resistant encryption for protection against code-breaking quantum computers and quantum-resistant signature schemes for secure blockchain deployment.

Crypta Labs is quantum security startup that is developing a quantum-based encryption chip and software to secure the Internet of Things. The company developed a Quantum Random Number Generator (QRNG) for mobile devices and an integrated security chip for others. The company is targeting transport, military and medical markets.

Quantum Thought offers an incubator for the creation of quantum computing applications.

Quantum Xchange is a quantum fiber network that is based in the United States. It uses photons of light to physically transfer a shared secret between two entities.

Company developing optical communications hardware for strong digital encryption.

SpeQtral is a company that is interested in developing quantum communication technologies

QEYnet is a company that develops cybersecurity software to defend against quantum computers.

Nu Quantum is a company developing quantum security technology founded in 2018 by Dr Carmen Palacios-Berraquero, Yuri Andersson, Matthew Applegate and Mete Atature.

Pqshield Limited is an Oxford-based cryptography company using their cryptographic knowledge to develop cybersecurity solutions.

QuintessenceLabs is a Deakin, Australian Capital Territory-based cybersecurity company that develops solutions in quantum security.

Single Quantum is a company making optical imaging and telecommunication systems founded in 2012 by Sander Dorenbos.

Universal Quantum is a building a universal quantum computer founded by Sebastian Weidt.

Speqtral Quantum Technologies provides quantum communications solutions

Guardtime's Black Lantern platform provides real-time cybersecurity and data-centric asset protection.

A company offering a suite of proprietary products and services including quantum risk assessments, roadmap design and implementation, quantum safe hardware and software, and education services to allow organizations to avoid quantum security threats to their IT infrastructure.

VeriQloud is an applications and software for quantum networks founded in 2017 by Marc Kaplan.