Alternatives

Products that do what CastleFile does

Fun, secure and client side file encryption using chess

1. 1NI
   NoFile.io – A simple file storage site with lots of perks▲231

   2017 · nofile.io

2. 2
   hat.sh▲212

   Free, fast, secure and serverless file encryption

   2019

3. 3
   transferfile.io▲85

   Encrypted filesharing through the IPFS network

   2021

4. 4
   NordLocker▲87

   Store and share your files securely

   2020

5. 5
   fileAI MCP▲235

   Give AI agents secure, real-time access to your files

   2025

6. 6
   LockBridge▲134

   Secure and seamless file transfer with zero-trust encryption

   2024

7. 7
   NoFile.io▲108

   A simple file storage site with lots of perks

   2017

8. 8CS
   Crypt – Secure Configuration Storage in Etcd or Consul▲69

   2014 · xordataexchange.github.io

9. 9AS
   A simple app to cryptographically time-lock files▲30

   2020 · github.com

10. 10
    AroCrypt▲127

    Encrypt files, then make them vanish inside images

    2025

11. 11SH
    Securely Handle Encryption Keys in Go▲119

    2017 · github.com

12. 12LA
    Lego – A Let's Encrypt Library and CLI in Go▲93

    2015 · github.com

13. 13
    Cryptomator 2▲78

    Open-Source encryption fully integrated into the files app

    2021

14. 14SC
    S-Cache – Secure storage for cryptographic secrets, modeled after sudo▲51

    2020 · github.com

15. 15KA
    Kbsecret – A secret manager backed by Keybase and KBFS▲14

    2017 · github.com

16. 16SA
    Securefs, a better transparent encryption filesystem▲18

    2015 · github.com

17. 17CA
    Cryptr a simple shell utility for encrypting and decrypting files▲7

    2017 · github.com

18. 18AE
    Advanced encryption in PostgreSQL▲12

    2016 · github.com

19. 19NQ
    Ncrypt – Query encrypted files privately with FHE▲8

    Hey HN, We're building ncrypt, an open-source encrypted file manager that allows you to store, manage, and privately query your files using fully homomorphic encryption (FHE). This project originally started as a simple SFTP-like CLI for my personal S3 buckets which I used to send and retrieve encrypted files and have more granular control over key rotation. As the number of files that I was storing grew, file discovery started to become a problem, and I found myself frequently having to download and decrypt files to inspect their contents. Rather than leaving them unencrypted in S3 and…

    2025 · github.com

20. 20CS
    Client-Side Encrypted Gist▲16

    2016 · github.com

21. 21CH
    Classified.html, encryption solution that is just a file, web/terminal▲19

    2021 · github.com

22. 22MI
    MFile.io▲32

    2016 · mfile.io

23. 23EE
    Encrypted end-to-end file transfer▲33

    2013 · github.com

24. 24OT
    Ockam – Tools for end-to-end encryption, in Rust▲10

    2021 · github.com

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