ParityQC

AQT builds compact, rack-mountable trapped-ion quantum computers based on research from the University of Innsbruck, one of the world's leading trapped-ion research groups. AQT's systems are designed to fit into standard server racks, making them practical for integration into existing IT infrastructure. The company provides cloud access to its systems and has deployed quantum computers at several European research institutions. AQT focuses on accessibility and industrial applicability.

QMware provides a hybrid quantum-classical cloud platform designed to integrate quantum computing resources with classical high-performance computing. Based in Austria with operations in Germany, QMware focuses on enterprise use cases where quantum and classical compute work together — particularly optimization, simulation, and AI workloads. The platform supports multiple quantum backends.

Classiq has created a quantum software platform that automates the design of quantum circuits from high-level functional descriptions — analogous to what compilers did for classical computing. Instead of manually placing gates, developers describe what they want the algorithm to achieve, and Classiq's synthesis engine generates optimized circuits. The company raised $45M in Series B funding and has partnerships with IonQ, IBM, Microsoft, AWS, and NVIDIA. Backed by Samsung NEXT and In-Q-Tel (CIA's venture arm).

Riverlane is the global leader in quantum error correction technology, developing Deltaflow — a real-time QEC stack with proprietary chips, decoders, and compilers that works across all qubit modalities. Deltaflow 2 was installed at Oak Ridge National Lab in 2025, the first dedicated real-time QEC integration at a U.S. national lab. In 2026, Riverlane demonstrated 16.32µs QEC latency — a fourfold improvement over Google's Willow benchmark. The company partners with over 60% of the world's quantum computer companies.