Alternatives

Products that do what Seal – Verifiable timestamp for your private ideas does

1. 1
   Sealit▲511

   Simple data security to get compliant & stay productive

   2023

2. 2LS
   Let's Seal – Let's Encrypt for document signing, free and self-hosted▲94

   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…

   Jul 2026 · github.com

3. 3PS
   Portable Secret – How I store my secrets and communicate privately▲1,290

   2022 · mprimi.github.io

4. 4
   Meta Video Seal▲167

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

   2024

5. 5
   TimeSeal▲116

   Restoring digital trust, one blockchain timestamp at a time

   2023

6. 6
   Claimby▲107

   Free legally-valid timestamps for your files, ideas & art.

   2018

7. 7
   Signaturely▲439

   Free eSignatures for life, free contract templates

   2021

8. 8TD
   Timelock.dev – Send a secret into the future using timelock encryption▲224

   This is simply a web interface built on top of the timelock encryption system posted by Cloudflare last week. https://blog.cloudflare.com/harnessing-office-chaos

   2024 · timelock.dev

9. 9
   LeaksID▲318

   Enrich private docs with dynamic invisible anti-leak marks

   2021

10. 10
    Secret▲173

    Send a message through a safe, private, and encrypted link

    2017

11. 11
    Seald SDK▲108

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

    2021

12. 12
    Enclosed▲143

    Send private and secure notes

    2024

13. 13
    Inscribe▲112

    A protocol for rich, verified signatures on any NFT

    2021

14. 14EA
    Encrypt and hide files inside images▲208

    2022 · github.com

15. 15
    Cryptee▲155

    An encrypted home for your private photos, docs & notes.

    2018

16. 16
    SealedIn▲2

    Digital time capsules for the people you love.

    Mar 2026

17. 17
    SealDoc — independently verifiable▲3

    Compliance infrastructure for legally provable documents

    Jul 2026 · sealdoc.eu

18. 18GA
    Get a verifiable human proof seal for your content▲13

    Get a unique seal and url that is verifiable. Display a unique badge next to your content that proves there is a human behind the content.

    2023 · humanproved.com

19. 19
    OpenSign™: Open Source DocuSign & more▲109

    Enterprise-Level Document Signing Goes Open-Source

    2023

20. 20
    xordrive▲106

    Encrypted & decentralized cloud storage.

    2019

21. 21BT
    btproof - trusted timestamping on the Bitcoin blockchain▲75

    2013 · btproof.com

22. 22
    Opacity Storage▲73

    Private encrypted file storage, powered by crypto.

    2019

23. 23
    Blocknify▲71

    Sign sensitive documents without sacrificing your privacy.

    2018

24. 24
    Blockusign▲93

    Secure Document Signing & Verification Powered by Blockchain

    2018

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