Best Finance Data API Products in 2026

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.

Key Polygon.io features:

Comprehensive Data Coverage Real-time Data Developer-friendly API Historical Data Access

TradingJournal helps MT4/MT5 traders import, review, and improve their trades with analytics, trade charts, playbooks, rules, checklists, Review Queue, Weekly AI Reviews, and AI coaching.

Key TradingJournal features:

MT4/MT5 File Import Automatic Broker Sync Trade Charts Performance Analytics

Try for free freemium $29.0 / Monthly

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.

Key Alpha Vantage features:

Free Tier Comprehensive Data Ease of Use Real-time and Historical Data

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.

Key Financial Modeling Prep features:

Comprehensive Data User-Friendly Interface API Availability Affordability

The simplest and most effective way to access both realtime and historical stock, forex, cryptocurrency data, and over 100 technical indicators.

Key Twelve Data features:

Comprehensive Data Coverage Affordable Pricing Ease of Use High Scalability

Open Source

Finage is a next-generation market data feeds provider. We are providing 60.000+ financial data feeds in real-time and historical via APIs and WebSockets such as; Global Stock, Forex, Cryptocurrency, ETFs, Indices, and financial statements, and more.

Key Finage features:

Comprehensive Market Data User-Friendly API Global Coverage Scalability

freemium $49.0 / Monthly

Financial market data on-demand. Xignite financial Web services help build smarter websites and applications in minutes with zero up-front investment.

Key Xignite features:

Comprehensive Data Coverage Ease of Integration Scalability Reliable Data Delivery

Simple REST API for commission-free stock trading.

Key Alpaca Trading API features:

Commission-Free Trading API-First Platform Paper Trading Integration with Popular Platforms

Open Source

The first stock brokerage API company.

Key tradier features:

Low Commissions API Access Partner Network Customizable Trading Platform

Stock Market and Financial Data API.

Key FinancialData.net features:

Comprehensive Data Coverage User-Friendly Interface Customizable Data Feeds API Access

Open Source freemium

The reliable, enterprise API that powers IEX. Free for everyone.

Key IEX Developer Platform features:

Comprehensive Data Free Access Real-Time Updates Clear Documentation

Quandl is a platform for financial, economic, and alternative data, serving investment professionals.

Key Quandl features:

Comprehensive Data Data Accessibility User-Friendly Interface Quality of Data

Free fundamentals API for developers: income statements, balance sheets, cash flow statements, and key ratios with historical coverage.

Key Finqual.app features:

User-Friendly Interface Comprehensive Financial Tools Customization Options Data Security

freemium

The stock market API powered by SQL.

freemium $14.99 / Monthly