# ISARA Radiate Quantum-Safe Toolkit vs QCS Post-Quantum Secure Backup (.qtm): side-by-side comparison (2026) [ISARA Radiate Quantum-Safe Toolkit](https://cybersectools.com/tools/isara-radiate-quantum-safe-toolkit) is a commercial [post-quantum cryptography](https://cybersectools.com/categories/post-quantum-cryptography) solution by [ISARA](https://cybersectools.com/companies/isara). [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. ## Our take What our shortlists say about the one we picked. ### [ISARA Radiate Quantum-Safe Toolkit](https://cybersectools.com/tools/isara-radiate-quantum-safe-toolkit) Best for: Developers adding PQC to apps and devices ISARA Radiate earns a spot because hybrid certificates let old and new PKI run side by side, so you can move in steps instead of all at once. It suits development teams adding NIST algorithms to apps or to constrained devices like smartcards. Since it is a toolkit, plan for your own engineers to do the work, and ask how the crypto-agile API lets you switch algorithms later. From [Best Post-Quantum Cryptography Solutions for Business](https://cybersectools.com/shortlists/best-post-quantum-cryptography-solutions), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). 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 | | ISARA Radiate Quantum-Safe Toolkit | 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 | Mid-Market, Enterprise | Mid-Market, Enterprise | | Company | ISARA | QCS (Quantum Computing Solutions) | | Headquarters | – | – | ### Use cases and capabilities | | ISARA Radiate Quantum-Safe Toolkit | QCS Post-Quantum Secure Backup (.qtm) | |---|---|---| | Quantum Safe | Yes | Yes | | SDK | Yes | – | | Encryption | Yes | Yes | | Data Breach | – | Yes | | GDPR | – | Yes | | Critical Infrastructure | – | Yes | | Healthcare | – | Yes | | Documentation | – | Yes | | Security Architecture | – | Yes | ### Core features **ISARA Radiate Quantum-Safe Toolkit** 10 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. ### Integrations **ISARA Radiate Quantum-Safe Toolkit** 2 integrations listed. Sign in on the page to see them. **QCS Post-Quantum Secure Backup (.qtm)** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [ISARA Radiate Quantum-Safe Toolkit](https://cybersectools.com/tools/isara-radiate-quantum-safe-toolkit) fits if you need both cloud and on-premises options. - [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. ## ISARA Radiate Quantum-Safe Toolkit vs QCS Post-Quantum Secure Backup (.qtm) FAQ Common questions when comparing ISARA Radiate Quantum-Safe Toolkit vs QCS Post-Quantum Secure Backup (.qtm) for post-quantum cryptography. ### What is the difference between ISARA Radiate Quantum-Safe Toolkit and QCS Post-Quantum Secure Backup (.qtm)? **ISARA Radiate Quantum-Safe Toolkit**: SDK for integrating NIST-standardized PQC algorithms into apps and devices. Built by ISARA. **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 ISARA Radiate Quantum-Safe Toolkit and QCS Post-Quantum Secure Backup (.qtm)? **ISARA Radiate Quantum-Safe Toolkit** is made by ISARA. **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 ISARA Radiate Quantum-Safe Toolkit a good alternative to QCS Post-Quantum Secure Backup (.qtm)? Often, yes. ISARA Radiate Quantum-Safe Toolkit 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 - [ISARA Radiate Quantum-Safe Toolkit vs Mumken PQC Platform](https://cybersectools.com/compare/isara-radiate-quantum-safe-toolkit-vs-mumken-pqc-platform) - [ISARA Radiate Quantum-Safe Toolkit vs PQShield UltraPQ-Suite](https://cybersectools.com/compare/isara-radiate-quantum-safe-toolkit-vs-pqshield) - [ISARA Radiate Quantum-Safe Toolkit vs SylLab Systems](https://cybersectools.com/compare/isara-radiate-quantum-safe-toolkit-vs-syllab-systems) - [QCS Post-Quantum Secure Backup (.qtm) vs Mumken PQC Platform](https://cybersectools.com/compare/mumken-pqc-platform-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 SylLab Systems](https://cybersectools.com/compare/qcs-post-quantum-secure-backup-qtm-vs-syllab-systems) ## Alternatives to each - [See all ISARA Radiate Quantum-Safe Toolkit alternatives](https://cybersectools.com/alternatives/isara-radiate-quantum-safe-toolkit) - [See all QCS Post-Quantum Secure Backup (.qtm) alternatives](https://cybersectools.com/alternatives/qcs-post-quantum-secure-backup-qtm) --- Source: https://cybersectools.com/compare/isara-radiate-quantum-safe-toolkit-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/isara-radiate-quantum-safe-toolkit.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on ISARA Radiate Quantum-Safe Toolkit 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