# CypherShield vs QCS Post-Quantum Secure Backup (.qtm): side-by-side comparison (2026)

[CypherShield](https://cybersectools.com/tools/cyphershield) is a commercial [post-quantum cryptography](https://cybersectools.com/categories/post-quantum-cryptography) solution by [CypherShield](https://cybersectools.com/companies/cyphershield). [QCS Post-Quantum Secure Backup (.qtm)](https://cybersectools.com/tools/qcs-post-quantum-secure-backup-qtm) is a commercial [post-quantum cryptography](https://cybersectools.com/categories/post-quantum-cryptography) solution by [QCS (Quantum Computing Solutions)](https://cybersectools.com/companies/qcs-quantum-computing-solutions). Features, integrations, deployment and the company behind each one, side by side.

Need the answer fast? [Best Post-Quantum Cryptography Solutions for Business](https://cybersectools.com/shortlists/best-post-quantum-cryptography-solutions) picks SandboxAQ AQtive Guard, QuSecure QuProtect R3, Venari Adaptive Cryptographic Intelligence Platform and 4 more.

## Side-by-side comparison

| | CypherShield | QCS Post-Quantum Secure Backup (.qtm) |
|---|---|---|
| Pricing model | Commercial | Commercial |
| Category | Post-Quantum Cryptography | Post-Quantum Cryptography |
| Verified | No | No |
| Deployment type | Hybrid | On-Premises |
| Company size fit | Startup, SMB, Mid-Market, Enterprise | Mid-Market, Enterprise |
| Company | CypherShield | QCS (Quantum Computing Solutions) |
| Headquarters | – | – |

### Use cases and capabilities

| | CypherShield | QCS Post-Quantum Secure Backup (.qtm) |
|---|---|---|
| Quantum Safe | Yes | Yes |
| Encryption | Yes | Yes |
| Key Management | Yes | – |
| IoT Security | Yes | – |
| SDK | Yes | – |
| MITM | Yes | – |
| Authentication | Yes | – |
| Crypto | Yes | – |
| Signature | Yes | – |
| RFID | Yes | – |
| Data Breach | – | Yes |
| GDPR | – | Yes |
| Critical Infrastructure | – | Yes |
| Healthcare | – | Yes |
| Documentation | – | Yes |
| Security Architecture | – | Yes |

### Core features

**CypherShield**

8 features listed. Sign in on the page to see them.

**QCS Post-Quantum Secure Backup (.qtm)**

8 features listed. Sign in on the page to see them.

## Which one fits you

Based on what each listing shows: deployment, company size, price and open source.

- [CypherShield](https://cybersectools.com/tools/cyphershield) fits if you need both cloud and on-premises options and you are a startup or a small business.
- [QCS Post-Quantum Secure Backup (.qtm)](https://cybersectools.com/tools/qcs-post-quantum-secure-backup-qtm) fits if you need to run it on your own servers.

## CypherShield vs QCS Post-Quantum Secure Backup (.qtm) FAQ

Common questions when comparing CypherShield vs QCS Post-Quantum Secure Backup (.qtm) for post-quantum cryptography.

### What is the difference between CypherShield and QCS Post-Quantum Secure Backup (.qtm)?

**CypherShield**: Software platform providing quantum-resistant encryption, key exchange, and auth. Built by CypherShield.

**QCS Post-Quantum Secure Backup (.qtm)**: Post-quantum file archive format (.qtm) using Kyber/Dilithium for verifiable, offline. Built by QCS (Quantum Computing Solutions).

The table above shows where their features, integrations, deployment and company size fit differ.

### Who makes CypherShield and QCS Post-Quantum Secure Backup (.qtm)?

**CypherShield** is made by CypherShield. **QCS Post-Quantum Secure Backup (.qtm)** is made by QCS (Quantum Computing Solutions). The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

### Is CypherShield a good alternative to QCS Post-Quantum Secure Backup (.qtm)?

Often, yes. CypherShield and QCS Post-Quantum Secure Backup (.qtm) 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.

## Related comparisons

- [CypherShield vs Fortytwo Labs I-AM](https://cybersectools.com/compare/cyphershield-vs-fortytwo-labs-i-am)
- [CypherShield vs PQShield UltraPQ-Suite](https://cybersectools.com/compare/cyphershield-vs-pqshield)
- [CypherShield vs Mumken PQC Platform](https://cybersectools.com/compare/cyphershield-vs-mumken-pqc-platform)
- [QCS Post-Quantum Secure Backup (.qtm) vs Fortytwo Labs I-AM](https://cybersectools.com/compare/fortytwo-labs-i-am-vs-qcs-post-quantum-secure-backup-qtm)
- [QCS Post-Quantum Secure Backup (.qtm) vs PQShield UltraPQ-Suite](https://cybersectools.com/compare/pqshield-vs-qcs-post-quantum-secure-backup-qtm)
- [QCS Post-Quantum Secure Backup (.qtm) vs Mumken PQC Platform](https://cybersectools.com/compare/mumken-pqc-platform-vs-qcs-post-quantum-secure-backup-qtm)

## Alternatives to each

- [See all CypherShield alternatives](https://cybersectools.com/alternatives/cyphershield)
- [See all QCS Post-Quantum Secure Backup (.qtm) alternatives](https://cybersectools.com/alternatives/qcs-post-quantum-secure-backup-qtm)

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Source: https://cybersectools.com/compare/cyphershield-vs-qcs-post-quantum-secure-backup-qtm

For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cyphershield.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md.

More on CypherShield and QCS Post-Quantum Secure Backup (.qtm): funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md