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Alternatives

Products that do what Let's Seal – Let's Encrypt for document signing, free and self-hosted does

TLDR, Let's Seal gives the finger to Adobe and every doc signing tool (docusign, google, etc) who pay to play with the Adobe Approved Trust List and then charge you for something that should be free. Currently even the person checking if a document/contract is sealed or code is authentic has to also be inside the same Adobe walled garden too. Verification, the part that should be free is the part everyone charges for. Thats the shape Let's Encrypt fixed for TLS, and I wanted the same thing for documents and files. The core idea therefore needed to go a bit beyond e signatures and i…

  1. 1

    Enterprise-Level Document Signing Goes Open-Source

    2023

  2. 2

    Secure Document Signing & Verification Powered by Blockchain

    2018

  3. 3

    Simple, intuitive and binding e-signatures, absolutely free

    2021

  4. 4

    Legally binding e-signatures for $2.99. No subscriptions.

    Jul 2026 · sealitdone.io

  5. 5
    LeaksID318

    Enrich private docs with dynamic invisible anti-leak marks

    2021

  6. 6

    A state-of-the-art, open-source model for video watermarking

    2024

  7. 7
    DocuSeal130

    Open-source DocuSign alternative

    2023

  8. 8
    Seald SDK108

    Protect your users' data with end-to-end encryption.

    2021

  9. 9

    Sign sensitive documents without sacrificing your privacy.

    2018

  10. 10

    Free PDF filling and signing over email.

    2016

  11. 11LS
  12. 12

    Open-source tool for digitally signing PDFs

    2022

  13. 13
    Fill84

    The smart way to fill, send, sign & store PDF's

    2019

  14. 14

    Encrypt your Google Docs

    2015

  15. 15

    Sign Your Docs Digitally Using Bitcoin

    2014

  16. 16

    E-sign documents by forwarding an email. $0.25.

    Jul 2026 · kysigned.com

  17. 17WB

    Hello HN, Over the last year we've been building snote.app, a Privacy focused, End-to-End Encrypted alternative to Notion. You can write, plan, collaborate and get organized - it allows you to take notes, store files, add tasks, manage projects & more. Whether you're working solo or in a team. We are hoping to use this post as an opportunity to collect feedback from fellow hackers. If there's anything we can do better, please let us know

    2023 · snote.app

  18. 18

    A DocuSign Alternative You Can Self-Host. Truly Unlimited!

    Feb 2026

  19. 19

    Seal sensitive docs before they leave the browser

    26d ago · compliancelocker.app

  20. 20

    Sign anything. One flat price. No per-doc, no sales call.

    Jul 2026 · signfile.io

  21. 21
    Subnoto20

    Electronic signatures rebuilt for modern security

    Dec 2025

  22. 22

    Send secure document links, not risky attachments

    Jun 2026 · clausign.com

  23. 23EP

    I've had issues saving bookmarks on my computer since my girlfriend always uses it. I'm talking about engagement ring related bookmarks, birthday plans related bookmarks, etc. My buddy and I built an extension called Hush that allows you to save them behind a password of your choosing. They're encrypted using SHA-256/AES, and you can export/import them to your liking (in case someone accidentally uninstalls the extension). It only operates in private browsing for security reasons. Check it out and let us know what you think! Chrome link:…

    2013

  24. 24GC

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