Clouds for doing quantum computing are becoming increasingly popular. Here is a list with links of those quantum clouds that already exist or are imminent. All are commercial but usually free for small jobs and open to the public. Most use open source qc software but some don’t and have opted to keep their software proprietary. In Alphabetical Order. Thumbs-up emoji indicates working qc hardware. I will update this list as new quantum clouds emerge.
- Alibaba-CAS (CAS=Chinese Academy of Sciences) (promised) š
- Amazon “Braket” š
- Alpine Quantum Technologies (promised)š
- Bayesforge on Amazon. See also Bayesforge on Tencent
- DWave “Leap” (cloud service also via Amazon Braket) š
- Google (promised. Their quantum cloud will probably be closely linked to Google “Colab”)š
- IBM “Quantum Experience”š
- IonQ (promised, via Microsoft Azure Quantum and Amazon Braket)š
- Microsoft “Azure Quantum” (promised)
- PsiQuantum (not yet promised but highly likely due to $230M funding)š
- QCWare “Forge”
- QuTech “Quantum Inspire”
- Rahko “Hyrax”
- Rigetti “QCS”(cloud service also via Amazon Braket) š
- Strangeworks
- Xanadu AI (promised)
- Zapata “Orchestra”(promised)
footnote: I have definite opinions about the strengths and weaknesses of each of these quantum clouds which I will gladly share with you, but only by private channels because this topic is very controversial. I’ve worked on quantum computing for almost 2 decades, so my opinions on this subject are very well informed. Full disclosure: I used to work for Artiste-qb.net, the authors of Bayesforge, but I no longer do.
Quantum Bayesian Networks 
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