
Alpha Vantage
Polygon.io
Financial Modeling Prep
FinancialData.net
FinFeedAPI
Hotstoks
Open Exchange Rates
The simplest and most effective way to access both realtime and historical stock, forex, cryptocurrency data, and over 100 technical indicators.

JSON Formatter & Validator
DevTools Advanced
JSONFormatter.org
FreeFormatter
JSON Editor Online
SmallDevTools
TheDevTools
FOSS tools for developers

Which is more popular?
Based on our record, Twelve Data seems to be more popular. It has been mentioned 9 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | twelvedata.com | developertools.tech |
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External articles and on-site reviews we used to compare the two products.


Straightforward to use and powerful API to get financial data in real-time and complete historical data. Best in class Python package.
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Recommendations tracked on public social media and blogs since March 2021.


I chose Twelve Data for stock and crypto prices. Free tier: 800 calls per day. My math: 5 symbols × 96 fetches/day (every 15 minutes) = 480 calls. Comfortable margin. - Source: dev.to / about 2 months ago
I am using TwelveData forex API for Extraction of raw data from the financial markets in JSON format. - Source: dev.to / over 1 year ago
Twelve Data provides extensive financial market coverage, making it ideal for those looking for a free API for building a stock portfolio tracker. - Source: dev.to / over 1 year ago
Tracking DeveloperTools.Tech since Apr 2023.
When comparing Twelve Data and DeveloperTools.Tech, you can also consider the following products.

Alpha Vantage offers free APIs in JSON and CSV formats for realtime and historical stock and forex data, digital/crypto currency data and over 50 technical indicators.
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The JSON Formatter was created to help with debugging.
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Polygon.io offers streaming realtime data for stocks/equities, ETFs, Indecies and Forex/Currencies including crypto currencies. Our Real-Time Stock Data APIs help you build the future on fintech.
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A collection of developer tools in one place in your browser
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Access all stocks discounted cash flow statements, market price, stock markets news, and learn more about Financial Modeling. Learn M&A, LBO, DCF, Comps, and Financial Statement Modeling thought concrete examples
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Online JSON Formatter and JSON Validator will format JSON data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON
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