Dev tools · alternatives · 2026

24 alternatives to Squarelink

Sign blockchain transactions with just an email and password

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Squarelink launched in 2018; newer entries below may have overtaken it.

1. 1
   Square Cash▲126

   Email money to anyone

   2014 · cash.app · its alternatives →

2. 2
   TransferChain Send▲591

   Blockchain-based secure & private file sharing for everyone

   2023 · send.transferchain.io · its alternatives →

3. 3
   BlockSign▲79

   Sign Your Docs Digitally Using Bitcoin

   2014 · blocksignit.com · its alternatives →

4. 4
   An educational blockchain implementation in Python▲412

   Various ipython notebooks. Contribute to julienr/ipynb_playground development by creating an account on GitHub.

   2017 · github.com · its alternatives →

5. 5
   BlockLink▲122

   Linktree for all your crypto wallets and then some

   2021 · its alternatives →

6. 6
   NoteChain▲109

   A beautiful note taking app running on Ethereum Blockchain

   2018 · its alternatives →

7. 7
   Blockusign▲93

   Secure Document Signing & Verification Powered by Blockchain

   2018 · blockusign.co · its alternatives →

8. 8
   DL3ARN▲234

   Digitize & verify credentials in the blockchain

   2023 · its alternatives →

9. 9
   LockBridge▲134

   Hi! I built Lockbridge because encrypted file sharing and management are still too complicated in 2025. Core features: - Bridges – shareable links for encrypted uploads/downloads with auto-expiration - Cloud federation – unified dashboard for S3, Azure, GCP, Google Drive, Dropbox and more… - Blockchain audit trails – immutable compliance logs on Polygon for HIPAA/SOX (optional) - Zero-knowledge encryption – client side end-to-end encryption, we can't decrypt your files Example use case: Create a bridge, send the link to a client, they upload files directly to your Google…

   2024 · lockbridge.com · its alternatives →

10. 10
    Blocksign, a Bitcoin service for legally signing any document▲17

    Blockchain is a wonderful record keeper that can track every transaction that happens in the string.

    2014 · blocksignit.com · its alternatives →

11. 11
    Nash Link▲109

    Accept crypto, receive cash – we handle the blockchain

    2020 · nash.io · its alternatives →

12. 12
    Sat2.io▲63

    Send Bitcoin to anyone, using the Lightning Network

    2019 · bscf.io · its alternatives →

13. 13
    BLLNG▲109

    Connect billing with no pain

    2023 · bllng.com · its alternatives →

14. 14
    Signway - pre-signed URLs for LLM apps▲77

    Bring the power of pre-signed URLs for your LLM applications

    2023 · its alternatives →

15. 15
    idLinkChain.com▲14

    Your identity on chain

    2024 · idlinkchain.com · its alternatives →

16. 16
    TxHash Blockchain as a Service▲120

    Cryptocurrency and smart contract event notifications

    2018 · its alternatives →

17. 17
    FactomAuthorize▲69

    Protect your work on the blockchain

    2018 · its alternatives →

18. 18
    Circle▲75

    Buy, store, receive and send Bitcoin super fast.

    2023 · its alternatives →

19. 19
    OpenNode▲95

    The easiest way to accept bitcoin.

    2018 · opennode.com · its alternatives →

20. 20
    GetBlock▲88

    API access to 40+ full blockchain nodes (BTC, ETH, BSC)

    2021 · getblock.io · its alternatives →

21. 21
    Bitski Wallet 2.0▲97

    The NFT and web3 wallet for everyone

    2023 · bitski.com · its alternatives →

22. 22
    PeerSend▲81

    Send crypto to anyone on anywhere with one click

    2021 · its alternatives →

23. 23
    Trustroot▲85

    Fraud and theft protection for cryptocurrency

    2018 · trustroot.io · its alternatives →

24. 24PS
    PeerSend – Social Payments powered by crypto▲47

    2021 · peersend.com · its alternatives →

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 →