Dev tools · alternatives · 2026
24 alternatives to QuantaCipher
Zero-trust PQC Encryption API
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.
- 1
Qpher▲4Post-quantum encryption & signing — drop-in REST APIs
Jun 2026 · qpher.ai · its alternatives →
- 2
filippo.io/mlkem768 is a pure-Go implementation of the post-quantum key exchange mechanism ML-KEM-768 optimized for correctness and readability.
2024 · words.filippo.io · its alternatives →
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Quantra: a derivatives pricing platform built on an open source C++ QuantLib engine, with a Python orchestration API and a web portal.
2017 · quantra.io · its alternatives →
- 6TP
Hi HN, we are the developers from Tuta (formerly Tutanota), the German end-to-end encrypted email provider, and we recently released the world's first post-quantum encryption for email. We have included a full technical write-up of the cryptography involved in these changes and we have released it for open public review. This document specifies TutaCrypt, a protocol designed for hybrid email encryption in Tuta Mail. The protocol combines a classical Elliptic-Curve-Diffie-Hellman key exchange with a post-quantum KEM. The goal is to replace the usage of RSA in Tuta Mail. In the remainder of…
2024 · tuta.com · its alternatives →
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Access Vault▲21Post-Quantum Credential Management Made Easy
2025 · accessvault.app · its alternatives →
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Find quantum-vulnerable crypto in your code
Jul 2026 · quantakrypto.com · its alternatives →
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Q3AS, deployment & execution of quantum algorithms by Aqora
2024 · aqora.io · its alternatives →
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Neptune is a quantum-safe layer 1 blockchain combining zk-STARKs and PoW consensus. Private by default, programmable, and built for global scale
2014 · neptune.io · its alternatives →
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Secure your App or Web before Quantum attack stay compliant
2025 · its alternatives →
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Post-Quantum Security for AI, Data, and Critical Systems.
Apr 2026 · its alternatives →
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Go Quantum-Safe Before Quantum Goes Live
2025 · qu-secure.net · its alternatives →
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Post - Quantum Blockchain (ML-DSA-65)
Jul 2026 · quantum-lattice.futuristicai.co.za · its alternatives →
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The European platform for post-quantum encryption & identity
Mar 2026 · quantumapi.eu · its alternatives →
- 20EE
Hi HN, we have recently completed a research project on how to encrypt emails with post-quantum secure algorithms as well as Forward Secrecy. We'd love to hear your feedback and discuss technical issues. The paper can be found here: https://eprint.iacr.org/2021/875
2021 · its alternatives →
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- 22FQ
SasaSavic.ca recently launched a public cryptographic timestamping service designed to remain verifiable even in a post-quantum world. The platform uses SasaSavic Quantum Shield™, a dual-signature protocol combining classical and post-quantum security. Each submitted SHA-256 hash is: • Dual-signed with ECDSA P-256 and ML-DSA-65 (per NIST FIPS 204) • Anchored to the Bitcoin blockchain via OpenTimestamps • Recorded in a public, verifiable daily ledger API (beta, no auth required): https://sasasavic.ca/beta-api/ Example curl request: curl -X POST…
Nov 2025 · its alternatives →
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Fully managed ledger database owned by a trusted authority.
2019 · aws.amazon.com · its alternatives →
- 24
Tuta guarantees your data stays private for free & without ads. Quantum-resistant encryption makes Tuta the best secure technology solution to protect your privacy.
2014 · tutanota.com · its alternatives →
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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →