QCS Post-Quantum Secure Backup (.qtm) is a commercial post-quantum cryptography solution by QCS (Quantum Computing Solutions). ZeroTier Quantum is a commercial post-quantum cryptography solution by ZeroTier. Features, integrations, deployment and the company behind each one, side by side.
What our shortlists say about the one we picked.
Best for: Distributed teams needing quantum-safe overlay networking across mixed environments
The trade-off is that ZeroTier Quantum is not a cryptographic management platform. It does not give you a CBOM, compliance reports, or a migration workflow for your existing PKI. It secures the network layer going forward. Teams that need to address the harvest-now-decrypt-later threat for data already in transit should pair this with a cryptographic inventory solution. For greenfield deployments or teams building new distributed infrastructure, ZeroTier Quantum is one of the more operationally straightforward ways to get post-quantum network security in place.
From Best Post-Quantum Cryptography Solutions for Business, Fall 2026
Reviewed by Nika (Nikoloz) Kokhreidze.
Post-quantum file archive format (.qtm) using Kyber/Dilithium for verifiable, offline
Post-quantum secure network overlay platform for distributed environments.
See more solutions in this category, or build a security stack from your picks.
Based on what each listing shows: deployment, company size, price and open source.
QCS Post-Quantum Secure Backup (.qtm) fits if you need to run it on your own servers.
ZeroTier Quantum fits if you need both cloud and on-premises options.
Common questions when comparing QCS Post-Quantum Secure Backup (.qtm) vs ZeroTier Quantum for post-quantum cryptography.
QCS Post-Quantum Secure Backup (.qtm): Post-quantum file archive format (.qtm) using Kyber/Dilithium for verifiable, offline. Built by QCS (Quantum Computing Solutions).
ZeroTier Quantum: Post-quantum secure network overlay platform for distributed environments. Built by ZeroTier.
The table above shows where their features, integrations, deployment and company size fit differ.
QCS Post-Quantum Secure Backup (.qtm) is made by QCS (Quantum Computing Solutions). ZeroTier Quantum is made by ZeroTier. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.
Often, yes. QCS Post-Quantum Secure Backup (.qtm) and ZeroTier Quantum are both Post-Quantum Cryptography products, and both cover Quantum Safe, Encryption. Use the table above to see where features, deployment and company size fit differ.
Need the answer fast? Best Post-Quantum Cryptography Solutions for Business picks SandboxAQ AQtive Guard, QuSecure QuProtect R3, Venari Adaptive Cryptographic Intelligence Platform and 4 more.See the shortlist