
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
DataConstruct
Data Creator
Datamade
Random Data
Generate and manage synthetic datasets easily with DUMMY DATABASE

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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| Website | alphavantage.co | dummydatabase.com |
| Pricing | — | |
| Platforms | — | |
| Company | — | Startup from Serbia · 1 - 9 employees · 2024 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Alpha Vantage yet.
Dummy Database is built to solve a simple, yet annoying problem — generating realistic test datasets quickly, without writing scripts or juggling Excel files. It’s designed for: - Developers needing dummy databases for prototyping & testing. - Analysts and BI specialists preparing demo...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


No analysis of Alpha Vantage yet.
Overall verdict
Why this product is good
Recommended for
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.


As answered by people managing Alpha Vantage and DUMMY DATABASE.
DUMMY DATABASE's answer:
A free, all-in-one data generation platform that builds everything from simple tables to full relational databases with advanced controls, unique event sequences, ERD visualization, built-in SQL querying, and multiple export formats — no limits, no paywalls.
DUMMY DATABASE's answer:
Unlike other data generators, DUMMY DATABASE gives you full relational database creation, unique event simulations, advanced control over every field, built-in SQL querying, and generous free limits — so you can go from idea to test-ready data without restrictions, subscriptions, or hidden fees
DUMMY DATABASE's answer:
DUMMY DATABASE's answer:
Began as a project for myself to be able to have custom datasets for testing purpose I've decided that it could be useful for wider audience and finalized it as a full-stack web project
DUMMY DATABASE's answer:
Python, Flask, HTML, CSS, Bootstrap, Redis, PostgreSQL, JavaScript
Share your experience with using Alpha Vantage and DUMMY DATABASE. 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 DUMMY DATABASE since Aug 2025.
When comparing Alpha Vantage and DUMMY DATABASE, 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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We fake it till you make it!
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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
Compare Financial Modeling Prep to Alpha Vantage or DUMMY DATABASE:
Data generator that can create a table filled with pseudo-random content.
Compare Data Creator to Alpha Vantage or DUMMY DATABASE: