The product
OpenFHE is an open-source library implementing post-quantum Fully Homomorphic Encryption schemes with simplified APIs and cross-platform support.
The closest OpenFHE alternatives are Matrics2, Arqit SKA-Platform and ISARA Radiate Quantum-Safe Toolkit. Picking an OpenFHE alternative comes down to fit: Post-Quantum Cryptography coverage, your environment, your integrations and your budget. So each option below shows what it covers, how it deploys, its pricing model and the company behind it.
20 alternativesClosest matches: Matrics2, Arqit SKA-Platform, ISARA Radiate Quantum-Safe ToolkitPage updated Nov 2026
The product
OpenFHE is an open-source library implementing post-quantum Fully Homomorphic Encryption schemes with simplified APIs and cross-platform support.
OpenFHE is a free Post-Quantum Cryptography solution. The closest matches by shared tags and NIST CSF 2.0 coverage are Matrics2, Arqit SKA-Platform, ISARA Radiate Quantum-Safe Toolkit, Post-Quantum Quantum Safe Platform, and PQShield UltraPQ-Suite. All 20 alternatives on this page are ranked the same way.
These 8 solutions overlap most with OpenFHE. Each row says what the product does and, when the overlap is big enough, which capabilities it shares.
One-time pad encryption system for secure data transmission over internet
Key features: 7 listed. See them on the Matrics2 page.
Quantum-safe key agreement platform for securing comms across endpoints.
Key features: 10 listed. See them on the Arqit SKA-Platform page.
View Arqit SKA-PlatformArqit SKA-Platform alternativesOpenFHE vs Arqit SKA-Platform
SDK for integrating NIST-standardized PQC algorithms into apps and devices.
Key features: 10 listed. See them on the ISARA Radiate Quantum-Safe Toolkit page.
View ISARA Radiate Quantum-Safe ToolkitISARA Radiate Quantum-Safe Toolkit alternativesOpenFHE vs ISARA Radiate Quantum-Safe Toolkit
Modular PQC platform covering identity, VPN, and messaging security.
Key features: 10 listed. See them on the Post-Quantum Quantum Safe Platform page.
View Post-Quantum Quantum Safe PlatformPost-Quantum Quantum Safe Platform alternativesOpenFHE vs Post-Quantum Quantum Safe Platform
Quantum-safe cryptographic software, hardware IP, and firmware upgrade solutions.
Key features: 9 listed. See them on the PQShield UltraPQ-Suite page.
View PQShield UltraPQ-SuitePQShield UltraPQ-Suite alternativesOpenFHE vs PQShield UltraPQ-Suite
Post-quantum security platform for space, IoT, edge, and critical systems.
Key features: 10 listed. See them on the SylLab Systems page.
View SylLab SystemsSylLab Systems alternativesOpenFHE vs SylLab Systems
Software platform providing quantum-resistant encryption, key exchange, and auth.
Key features: 8 listed. See them on the CypherShield page.
View CypherShieldCypherShield alternativesOpenFHE vs CypherShield
Mumken is a company homepage presenting a suite of post-quantum cryptography and digital sovereignty solutions for governments and enterprises. The offerings are organized around three missions: protecting information, protecting borders, and protecting identity. For protecting information, Mumken provides a post-quantum cryptographic engine that combines classical and post-quantum algorithms, offering crypto-agility so organizations can change algorithms without redesigning systems. This engine underpins additional products: quantum-resistant encrypted communication tunnels for interconnecting networks, sites, and data centers, and a proxy that adds a post-quantum protection layer in front of existing services without requiring changes to those applications. For protecting borders, Mumken offers automated border-control posts combining biometrics, document verification, and configurable rules, along with a central management platform that coordinates border posts, biometric systems, and passenger flows with dashboards and alerting. For protecting identity, the company provides a document and identity verification platform aimed at reducing fraud, a platform for secure issuance of identity and travel documents compliant with ICAO 9303 using cryptographic chips, and a platform for issuing high-density QR codes with cryptographic verification, optionally integrable with facial biometrics. The page addresses the "harvest now, decrypt later" threat from quantum algorithms such as Shor and Grover, which threaten RSA, ECC, AES, and SHA-2 based systems, and references NIST PQC, ENISA, and ETSI standards. Target sectors mentioned include public administration, security, defence, critical infrastructures, banking and finance, fintech, healthcare, telecommunications, and industry.</description> <parameter name="summary">Post-quantum cryptography and digital sovereignty solutions for governments and enterprises
1 listed. .
One-time pad encryption system for secure data transmission over internet
Quantum-safe key agreement platform for securing comms across endpoints.
SDK for integrating NIST-standardized PQC algorithms into apps and devices.
Modular PQC platform covering identity, VPN, and messaging security.
Quantum-safe cryptographic software, hardware IP, and firmware upgrade solutions.
Post-quantum security platform for space, IoT, edge, and critical systems.
Software platform providing quantum-resistant encryption, key exchange, and auth.
Post-quantum file archive format (.qtm) using Kyber/Dilithium for verifiable, offline
Quantum-secure VPN solution protecting data-in-motion and data-at-rest
Post-quantum cryptographic authentication solution with passwordless access
Quantum-safe VPN hardening via on-demand encrypted key orchestration.
Post-quantum secure network overlay platform for distributed environments.
Quantum-safe data protection platform securing data in transit with encryption
Quantum-resilient decentralized cloud storage with QRNG-based encryption
Quantum-resistant public key cryptography software based on NIST PQC standards
Client-side encryption & AI-driven data security platform for enterprises.
Nondeterministic block encryption algo resistant to quantum & AI attacks.
Encrypted mobile voice & messaging app using post-quantum cryptography.
Common questions when weighing alternatives to OpenFHE.
The closest matches to OpenFHE by shared tags and NIST CSF 2.0 coverage are Matrics2, Arqit SKA-Platform, ISARA Radiate Quantum-Safe Toolkit, Post-Quantum Quantum Safe Platform, and PQShield UltraPQ-Suite. All of them are Post-Quantum Cryptography products.
This page shows 20 alternatives to OpenFHE, all in the Post-Quantum Cryptography category. Each one is matched on shared tags and NIST CSF 2.0 areas, and the closest matches rank first.
OpenFHE is a free Post-Quantum Cryptography product. You can use it at no cost. Only commercial alternatives are listed here. Free and open source products are under /free.
OpenFHE is a Post-Quantum Cryptography product in the Quantum Security category. You can compare it with the 20 other Post-Quantum Cryptography products on this page.
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
