Dev tools · alternatives · 2026
24 alternatives to Majik Signature
Sign any file with post-quantum digital signatures
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier.
- 1
FIPSign▲1Post-quantum signing API · ML-DSA-65 (NIST FIPS 204)
May 2026 · fipsign.dev · 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 →
- 3
Qpher▲4Post-quantum encryption & signing — drop-in REST APIs
Jun 2026 · qpher.ai · its alternatives →
- 4
Quantum-secure timestamping for verifiable digital proofs
Nov 2025 · sasasavic.ca · its alternatives →
- 5
open-pdf-sign▲105Open-source tool for digitally signing PDFs
2022 · openpdfsign.org · 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 →
- 7
- 8FQ
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 →
- 9
Simple, intuitive and binding e-signatures, absolutely free
2021 · useanvil.com · its alternatives →
- 10
WaveSign▲2Tamper-evident file authentication for images and PDFs
Mar 2026 · wave-sign.com · its alternatives →
- 11
kysignedfree tier, from $0.25/mo▲13E-sign documents by forwarding an email. $0.25.
Jul 2026 · kysigned.com · its alternatives →
- 12
sproof sign▲80Signing made easy and safe | 100% made for Europe
2021 · sign.sproof.com · its alternatives →
- 13
- 14EE
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 →
- 15
signyourpdf▲12Secure PDF signatures with blockchain. Fast & reliable.
2025 · signyourpdf.net · its alternatives →
- 16
Access Vault▲21Post-Quantum Credential Management Made Easy
2025 · accessvault.app · its alternatives →
- 17
- 18
The European, GDPR-first alternative to DocuSign
Jul 2026 · cloud-signing.com · its alternatives →
- 19
A CLI tool for stamping a signature image onto a PDF - krisraven/qwiksi
Aug 2026 · github.com · its alternatives →
- 20
- 21
Post - Quantum Blockchain (ML-DSA-65)
Jul 2026 · quantum-lattice.futuristicai.co.za · its alternatives →
- 22
PDFSign▲1Sign any PDF in 60 seconds. Offline. No Java. No plugins.
May 2026 · pdfsign.in · its alternatives →
- 23
PDF Signify▲18Sign PDFs easily with a digital certificate multiple times
2024 · pdfsignify.com · its alternatives →
- 24
Customize free contract templates with secure eSignatures
2024 · formaloo.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 →