Dev tools · alternatives · 2026

24 alternatives to SEFCON Korean Stock API

DART XBRL API for Korean stocks — 1,200 companies

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   StockData.org▲78

   Free real-time, intraday and historical stock data JSON APIs

   2021 · stockdata.org · its alternatives →

2. 2
   Investorsexchange.jl – parse trade-level stock market data in Julia▲136

   Backstory: I wanted to play with intraday stock data but couldn't find a free dataset anywhere. IEXCloud [1] offers API access to 1-minute granularity intraday historical price data, but I was worried that it could get expensive or unwieldy to build up a substantial dataset via API calls. Plus, IEX gives out their raw data for free. I probably should have just used the IEXTools python library [2] to parse IEX's raw data dumps, but I was working on a Julia project, so it felt more thematically appropriate to build a new tool from scratch. I haven't been actively using InvestorsExchange.jl a…

   2022 · github.com · its alternatives →

3. 3
   Alpaca Data API▲321

   Free real-time stock market data API

   2020 · alpaca.markets · its alternatives →

4. 4
   StockDock▲106

   Live stock prices right in your macOS Dock

   2021 · gumroad.com · its alternatives →

5. 5
   A free, lightweight static page to get stock quotes using the IEX API▲207

   A free, lightweight, blazing-fast static page to get stock quotes using IEX Cloud - toddwschneider/stocks

   2018 · github.com · its alternatives →

6. 6
   Alpaca w/ Google Sheets▲117

   Stock Trading from Google Sheets

   2018 · docs.google.com · its alternatives →

7. 7
   SEC api by kimono▲105

   SEC filings API

   2015 · kimonolabs.com · its alternatives →

8. 8
   AI Trading Stock Fundamentals Dataset▲77

   Free algorithmic trading dataset directly from SEC filings

   2023 · rapidapi.com · its alternatives →

9. 9
   Finage▲104

   Real-time API platform for stock, forex, and crypto data

   2025 · finage.co.uk · its alternatives →

10. 10
    Stockshark Trading API▲24

    Trade stocks, FX, options & crypto with a single API

    2021 · stock-shark.com · its alternatives →

11. 11
    Firetail▲162

    Get push, SMS, and email stock price alerts 🚨 📈

    2017 · its alternatives →

12. 12
    Vouch API▲96

    AI equity research that proves it isn't lying

    Apr 2026 · vouchapi.com · its alternatives →

13. 13
    Yuzu - Stock and Crypto API▲135

    Build frontends faster with GraphQL and live price streams

    2022 · web.archive.org · its alternatives →

14. 14
    Historical order book reconstruction API for crypto markets▲78

    Historical tick-level order book updates, trades, quotes, open interest, funding, liquidations, options chains and more. API access and downloadable CSV files. Real-time consolidated market data streaming API via client libraries that connect directly to exchanges

    2019 · tardis.dev · its alternatives →

15. 15UF
    Unlimited, free intraday stock data API▲93

    2021 · styvio.com · its alternatives →

16. 16
    Stockflare's Ticker Bot▲74

    Get stock prices & valuation data via Facebook Messenger

    2016 · messenger.com · its alternatives →

17. 17
    Polygon Stock Options API▲75

    Real-time and historical data for every options chain

    2022 · massive.com · its alternatives →

18. 18
    The Finimize API▲47

    Investing insights, news + education for your platform

    2023 · finimize.com · its alternatives →

19. 19
    Stock Market Data API▲7

    Comprehensive stock market data, all in one place

    2021 · rapidapi.com · its alternatives →

20. 20
    Finnhub Stock API▲6

    Real-time stock, Fundamental and Alternative data API.

    2020 · its alternatives →

21. 21
    Polygon.io – Real-time Stock APIs, Forex and Crypto▲12

    Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.

    2020 · polygon.io · its alternatives →

22. 22
    StockShark API▲6

    News Sentiment, Stock Price, Financials API, for a Flat Fee

    2021 · stock-shark.com · its alternatives →

23. 23
    PutCall.nl▲4

    Free real-time stock intelligence Reddit + insider trades

    Feb 2026 · putcall.nl · its alternatives →

24. 24
    StockAnts▲11

    Fetch SEBI RAs stock calls, trends via simple APIs

    2025 · stockants.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 →