Dev tools · alternatives · 2026

24 alternatives to Horizon 1.0

Realtime, open-source backend for JavaScript apps

Sequence is an open-source backend infrastructure for JavaScript developers building on blockchain networks. It provides modular tools including wallet management, cross-chain payment processing, and real-time data… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Horizon 1.0 launched in 2016; newer entries below may have overtaken it.

1. 1
   Sequence▲502

   Supercharge your money with the world’s first money router

   2024 · getsequence.io · its alternatives →

2. 2
   An open-source financial ledger API written in Clojure▲125

   Immutable, scalable, and easy to use ledger service. - hoophq/sequence

   2020 · github.com · its alternatives →

3. 3
   Sequence Agentic▲249

   Money movement for AI agents

   Jul 2026 · home.getsequence.io · its alternatives →

4. 4IM
   I'm building an open-source, high-frequency trading system▲301

   2013 · scarcecapital.com · its alternatives →

5. 5
   The Million Dollar Homepage as an Ethereum Smart Contract and DApp▲344

   The Million Dollar Homepage as an Ethereum Smart Contract and DApp: A glimpse into what the future of web integrated with modern blockchain technology could be like.

   2017 · thousandetherhomepage.com · its alternatives →

6. 6
   Open sourcing a data flow engine for Clojure/Script▲116

   2019 · domino-clj.github.io · its alternatives →

7. 7
   Fragments▲123

   A platform for collective investments on-chain

   2022 · its alternatives →

8. 8
   A Cryptocurrency in 4K Lines of Scala Code▲37

   Modular blockchain framework. Public domain. Contribute to input-output-hk/Scorex development by creating an account on GitHub.

   2015 · github.com · its alternatives →

9. 9
   Stronghold Platform APIs▲70

   A digital wallet in every pocket

   2018 · its alternatives →

10. 10
    Mosaic – Use multiple iPhones as one big screen▲106

    Mosaic’s mission is to be the leading platform for reliable research, market information, and discussions on cryptoassets and related areas.

    2013 · mosaic.io · its alternatives →

11. 11
    Chain▲125

    The Block Chain API for Developers

    2014 · chain.com · its alternatives →

12. 12
    BigchainDB▲105

    The scalable blockchain database.

    2016 · bigchaindb.com · its alternatives →

13. 13SA
    Simple algorithmic trading in JavaScript▲88

    Trade multiple cryptocurrency and forex exchanges through a single interface or over a unified API. Build your trading strategies directly in the browser, backtest against every tick of historical price data and trade live with your broker. It couldn

    2014 · cloud9trader.com · its alternatives →

14. 14
    Maki▲84

    An efficient AI coding agent. Native Rust TUI. Immediate startup, 60 FPS, low memory. Indexes files instead of reading them, chains tools in a sandbox interpreter. Anthropic, OpenAI, Google, Z.AI, OpenRouter, Synthetic, or any OpenAI / Anthropic compatible API.

    2022 · maki.sh · its alternatives →

15. 15
    Realtime Crypto Investment Tracker▲71

    Dynamic notion template with realtime crypto pricing

    2022 · muditb.gumroad.com · its alternatives →

16. 16
    Golang automation for mining cryptocurrencies on the Spot Market▲64

    Golang automation for mining cryptocurrencies on the Spot Market - alexellis/spotminer

    2018 · github.com · its alternatives →

17. 17
    CHAINPOINT▲72

    Anchor an unlimited amount of data to multiple blockchains.

    2017 · chainpoint.org · its alternatives →

18. 18
    Sequence – a financial router with flowchart visuals▲11

    Sequence' is the first-of-its-kind financial router, which unlocks the power of financial automation. Tie all your accounts together, visualize your money flow, set smart routing rules, and control it all from one single, powerful platform.

    2022 · getsequence.io · its alternatives →

19. 19
    Chainkit from PencilDATA▲69

    Add blockchain integrity to your data and apps in 5 minutes

    2018 · its alternatives →

20. 20
    Chain Core - Developer Edition▲7

    Blockchain software for the financial industry.

    2016 · chain.com · its alternatives →

21. 21FB
    Flow-based programming for cryptocurrency trading▲26

    2021 · mirotomi.com · its alternatives →

22. 22
    Prophe▲15

    Real-time insights, revolutionary results

    2024 · its alternatives →

23. 23
    Bithoven – A high-level, imperative language for Bitcoin Smart Contract▲27

    Hey HN! I’m a researcher working on Bitcoin smart contracts, and today I’m releasing Bithoven—a high-level imperative language that compiles to native Bitcoin Script (Legacy, SegWit, and Taproot). The Goal: Raw Bitcoin Script is notoriously difficult to reason about. Writing raw Bitcoin Script today feels like writing Assembly in the 1970s. You have to mentally juggle the stack (`OP_SWAP`, `OP_ROT`), manually manage distinct execution branches, and pray you didn't leave a stack item unconsumed (which crashes the script). My goal was to bridge the gap between complex contract logic and raw…

    Dec 2025 · github.com · its alternatives →

24. 24
    Kurtosis, a platform for distributed whole-system testing in CI▲5

    The open source dev environment engine for blockchain infra.

    2020 · kurtosistech.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 →