Database of Quantum Software Companies (2025)

This living catalog maps the quantum software stack – from control & calibration, error correction/verification, compilers & toolchains, and orchestration/middleware, to algorithms, applications (e.g., chemistry, materials, finance, cybersecurity), simulation/emulation, and developer tooling. Use the filters to explore by stack layer, domain focus, hardware alignment (hardware‑agnostic vs. modality‑specific), deployment model (cloud/on‑prem), and company profile.

Notes & caveats: real‑world categories overlap, and many vendors span multiple layers; where that happens, I’ve tagged each company with the dominant role. The taxonomy here is my own attempt to bring order to a fast‑moving space – not a standard.

This database is under development; entries may change without notice. No warranties; I aim to keep it current, but updates aren’t guaranteed – feedback and corrections are welcome.

COMING SOON

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