
Polygon.io
Twelve Data
Financial Modeling Prep
Finage
BloombergView
FinancialData.net
Yahoo! Finance
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.
Colabity
CofounderFit
CoFinds
CoFoundersLab
coHounder
Edunin
The World's first MVP marketplace
Easiest way to buy & sell side projects and meet founders

Which is more popular?
Based on our record, Alpha Vantage should be more popular than SecondFounder. It has been mentioned 3 times since March 2021.
Website, pricing, platforms and company facts side by side.
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SF
SecondFounder
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| Website | alphavantage.co | secondfounder.com |
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What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
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 SecondFounder. 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...
We have no reviews of SecondFounder yet. Be the first one to post
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
Hi HN, I am selling my product https://secondfounder.com. It is a platform where you can buy/sell your side projects. Existing products/platforms are easy to use and try to provide most of the information needed to acquire a project, but... - Source: Hacker News / over 3 years ago
When comparing Alpha Vantage and SecondFounder, 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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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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Get aligned before you split equity, roles, and responsibility. Start with a free founder profile, then turn cofounder compatibility signals into documented decisions.
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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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Find cofounders, founding team or other professionals by pitching your startup in 200 characters or less.
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