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

OpenInsider
Congress Pings
Edgrapi
Polygon.io
Quiver
Financial Modeling Prep
Alpha Vantage
Public SEC insider trading filings, visualized.

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 | tracefour.com |
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| Company | — | Startup from Germany · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Twelve Data yet.
Tracefour turns public SEC EDGAR filings into a single, readable picture of who is buying and selling inside America's listed companies. Every Form 4 — the disclosure each director, officer, and 10%+ owner files when they trade their own company's stock — is pulled hourly straight from EDGAR,...
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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 / 3 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 Tracefour since May 2026.
When comparing Twelve Data and Tracefour, 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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OpenInsider is an SEC Form 4 insider screener that allows you to monitor the insider trading filings for insider buying and selling.
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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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Email alerts for new stock-trade filings by members of the U.S. House of Representatives.
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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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US government data as clean JSON: SAM.gov contract opportunities, USAspending awards, Grants.gov grants, congressional trades and SEC filings. Free tier, no card.
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