
Polygon.io
Twelve Data
Financial Modeling Prep
Yahoo! Finance
Finage
BloombergView
FinancialData.net
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.
Mockaroo
Random Data Monster
Universal Data Generator
Dummy File Generator
DUMMY DATABASE
RANDOM.ORG
Wheel of Names
Data generator that can create a table filled with pseudo-random content.

Which is more popular?
Based on our record, Alpha Vantage seems to be more popular. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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DC
Data Creator
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| Website | alphavantage.co | ecleti.com |
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What each product offers, as listed by its team.

Possible disadvantages
No features have been listed yet.
Walkthroughs and reviews on video.
Python Stock Screener: Alpha Vantage API vs. Google Finance | #28 (Python for Finance #7)
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How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Alpha Vantage and Data Creator. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.

Alpha Vantage is one of the most interesting services. Mainly because it’s extremely simple to use, provides a ton of information (full historical records), and it’s not only cryptos, also has stock prices and other...
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Recommendations tracked on public social media and blogs since March 2021.

Source: code-(right click, view source) | stock data-alphavantage.co. Source: over 3 years ago
Stock prices is really not something you would want to webscrape. It's just not worth it, using an API is a lot faster. Eg alphavantage.co, it's free to use and you get your data in a structured form with zero hassle:. Source: over 5 years ago
Beware, you need to register on alphavantage.co to get your own API key which you put into the url instead of 'demo'. Source: over 5 years ago
Tracking Data Creator since Mar 2021.
When comparing Alpha Vantage and Data Creator, you can also consider the following products.

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 realistic data generator to test your app
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The simplest and most effective way to access both realtime and historical stock, forex, cryptocurrency data, and over 100 technical indicators.
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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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Generate realistic Salesforce test data with proper relationships and record types in minutes! Direct upload to sandboxes—no CSV wrangling, no production data risks.
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