How many alternatives to KvantPhone are available?

There are 48 alternatives to KvantPhone listed on CybersecTools, all within the Quantum Security category. Each alternative is matched based on shared capabilities, tags, and NIST CSF coverage areas.

Is KvantPhone free or commercial?

KvantPhone is a commercial Quantum Security tool. It requires a paid license or subscription. Both free and commercial alternatives are available for comparison.

What type of tool is KvantPhone?

KvantPhone is a Quantum Security tool within the broader Data Protection category. It is used by security professionals for quantum security capabilities and can be compared against 48 similar tools.

48 Best KvantPhone Alternatives & Competitors (2026)

Top KvantPhone Alternatives and Competitors at a Glance

A closer look at the 8 most relevant alternatives and competitors to KvantPhone, including their key features and shared capabilities.

QiSpace™ SEQUR

Commercial

Quantum Security

QEaaS platform for quantum entropy generation and secure distribution to endpoints.

Key features: Multisource quantum random number generation (QRNG) with entropy source diversity, Quantum-secure entropy distribution using Quantum Permutation Pad (QPP) technology achieving Shannon Perfect Secrecy, Gigabit-per-second entropy distribution over existing internet infrastructure, Entropy sovereignty with customer-hosted middle tier and full customer ownership of entropy, Support for air-gapped deployments and customer-supplied entropy sources

View QiSpace™ SEQUR|QiSpace™ SEQUR alternatives|Compare QiSpace™ SEQUR

BlockAPT Quantum

Commercial

Quantum Security

Quantum-secure VPN solution protecting data-in-motion and data-at-rest

Key features: FIPS 140-3 certified MTE technology, Quantum-resistant encryption, Data-in-motion and data-at-rest protection, Zero trust network access implementation, Multi-platform support (Windows, Linux, Android, Apple)

View BlockAPT Quantum|BlockAPT Quantum alternatives|Compare BlockAPT Quantum

VaultysID-Q

Commercial

Quantum Security

Post-quantum cryptographic authentication solution with passwordless access

Key features: Post-quantum cryptographic authentication, Passwordless authentication, Decentralized identifiers (DID), NIST-standardized post-quantum algorithms (Kyber, Dilithium, FALCON, SPHINCS+), Peer-to-peer (P2P) protocol

View VaultysID-Q|VaultysID-Q alternatives|Compare VaultysID-Q

Arqit SKA-Platform

Commercial

Quantum Security

Quantum-safe key agreement platform for securing comms across endpoints.

Key features: Dynamic quantum-safe encryption key generation at endpoints via lightweight software agents, Over-the-Air (OTA) bootstrap key delivery using NIST ML-KEM post-quantum algorithms, Mutual authentication with per-session key rotation for perfect forward secrecy, One-time-use on-demand encryption keys supporting zero trust architecture, Unlimited key volume generation scalable to variable group sizes

View Arqit SKA-Platform|Arqit SKA-Platform alternatives|Compare Arqit SKA-Platform

Post-Quantum Quantum Safe Platform

Commercial

Quantum Security

Modular PQC platform covering identity, VPN, and messaging security.

Key features: Multi-factor biometric authentication (Nomidio), Quantum-resistant credential management, Approval-as-a-service (Quorum), Hybrid PQ VPN implementing RFC9370 (IKEv2 multi-key exchange standard), End-to-end quantum-resistant encrypted messaging

View Post-Quantum Quantum Safe Platform|Post-Quantum Quantum Safe Platform alternatives|Compare Post-Quantum Quantum Safe Platform

QuintessenceLabs Product Portfolio

Commercial

Quantum Security

Quantum-enabled portfolio for key mgmt, QKD, QRNG, and data protection.

Key features: Centralized, vendor-neutral encryption key management (TSF) with PQC crypto-agility and Common Criteria Certification, Continuous Variable Quantum Key Distribution (CV-QKD) over optical links (qOptica 100), Quantum Random Number Generation at 1 Gb/sec, NIST 800-90B certified (qStream QRNG), Quantum-safe key distribution using NIST-approved PQC algorithms with support for ETSI 014, Cisco SKIP, and NOKIA Key Output protocols (qConnect), Cloud-hosted Entropy as a Service (EaaS) on a subscription basis (qStream EaaS)

View QuintessenceLabs Product Portfolio|QuintessenceLabs Product Portfolio alternatives|Compare QuintessenceLabs Product Portfolio

QuintessenceLabs Technology Portfolio

Commercial

Quantum Security

Quantum-based QRNG, QKD, and enterprise key mgmt for post-quantum security.

Key features: Quantum Random Number Generation via quantum tunneling at 1 Gbit/sec, Entropy as a Service (EaaS) via qStream™ subscription, Continuous Variable Quantum Key Distribution (CV-QKD) via qOptica, Detectable interception tracing in key exchange using laws of physics, Enterprise Key Management Server (KMS) with full cryptographic key lifecycle management

View QuintessenceLabs Technology Portfolio|QuintessenceLabs Technology Portfolio alternatives|Compare QuintessenceLabs Technology Portfolio

ZeroTier Quantum

Commercial

Quantum Security

Post-quantum secure network overlay platform for distributed environments.

Key features: Post-quantum and hybrid classical/quantum-resistant encryption, Cryptographic identity-based device authentication, End-to-end encrypted peer-to-peer connectivity, Automatic NAT traversal and adaptive path discovery, Centrally defined, locally enforced network policy

View ZeroTier Quantum|ZeroTier Quantum alternatives|Compare ZeroTier Quantum

The most popular alternatives to KvantPhone include QiSpace™ SEQUR, BlockAPT Quantum, VaultysID-Q, Arqit SKA-Platform, and Post-Quantum Quantum Safe Platform. These Quantum Security tools offer similar capabilities and are frequently compared by security professionals evaluating their options.

Best KvantPhone Alternatives & Competitors in 2026

KvantPhone Alternatives and Competitors

Top KvantPhone Alternatives and Competitors at a Glance

All 48 Alternatives & Competitors to KvantPhone

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