Company directory
Who is building what, across all seven hardware modalities and the software layer. Names and modality assignments are verified; quantitative claims stay out until checked against primary sources.
| Company | Modality | Status | Approach | |
|---|---|---|---|---|
|
D-Wave | annealing | public QBTS | The annealing pioneer. Commercial machines for years, thousands of qubits, and an honest asterisk: annealing is purpose-built for optimization, not universal gate-model computing. |
Directory facts policy: this field's numbers change quarterly, and wrong numbers destroy credibility. Founding years, headquarters, funding and device specs render as "to verify" until checked against primary sources. Never a recommendation of any company.