The Best Apis Data Services in 2026
We researched API data services through their official websites, including pricing pages, plan tables, and product documentation. Products are ranked on the category’s core job, value for money, and verified features, so buyers can compare dependable ways to add external data to software and workflows.
Our top picks
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Top ranked
Massive (formerly Polygon.io)#1 of 188.8/10Broad market data with REST, streaming, and bulk downloads for developer-built finance products.
Free plan
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Runner-up
EODHD#2 of 188.7/10A broad REST data API for teams combining market prices, fundamentals, news, and screening.
Free plan
-
Top-ranked free plan
Alpha Vantage#3 of 188.5/10A REST API for global market data, with historical equities and technical indicators.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 18 tools, best first
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Best forDevelopers needing broad financial market data
Broad market data with REST, streaming, and bulk downloads for developer-built finance products.
- Official SDKs
- Historical data
8.8/10★★★★☆Visit Massive -
Best forTeams needing broad financial data and integrations
A broad REST data API for teams combining market prices, fundamentals, news, and screening.
- Official SDKs
- Historical data
8.7/10★★★★☆Visit EODHD -
Best forDevelopers seeking equities, forex, and crypto data
A REST API for global market data, with historical equities and technical indicators.
- Official SDKs
- Historical data
8.5/10★★★★☆Visit Alpha Vantage -
Best forReal-time stock data and financial fundamentals
Financial-data APIs spanning real-time prices, fundamentals, news, and historical market data.
- Historical data
8.4/10★★★★☆Visit Finnhub -
Best forBudget-conscious users of market and fundamentals APIs
A broad financial data API with free access and paid personal-use plans from $16 monthly.
- Historical data
8.2/10★★★★☆Visit Profit.com -
Best forTeams needing SDK-rich equity and options data
Equity and options data with multiple API access paths, starting at $150 per month.
- Official SDKs
- Historical data
8.1/10★★★★☆Visit Intrinio -
Best forTeams enriching and searching person or company records
A broad enrichment and search toolkit for teams building data-driven workflows.
8.0/10★★★★☆Try People Data Labs -
Best forDevelopers needing free, open-source weather data
A no-key weather API for developers who need broad data coverage at no cost for non-commercial use.
- Historical data
7.9/10★★★★☆Visit Open-Meteo -
Best forEnterprises needing comprehensive weather services
A broad weather API for teams that need forecasts, alerts and historical data.
- Historical data
7.8/10★★★★☆Visit site -
Best forTeams needing historical, forecast, and alert weather data
A weather data API with historical records, forecasts, alerts, and browser visualization.
- Historical data
7.7/10★★★★☆Visit site -
Best forApple-platform teams building weather applications
A weather data API for Apple-platform teams, with REST access for other platforms.
- Official SDKs
- Historical data
7.6/10★★★★☆Try Apple WeatherKit -
Best forTeams needing IP geolocation and threat detection
IPinfo pairs broad IP intelligence with a free tier and paid privacy detection.
7.5/10★★★★☆Visit IPinfo -
Best forDevelopers needing currency rates and conversions
A straightforward JSON API for exchange rates, with historical queries and paid-tier conversion tools.
- Historical data
7.4/10★★★★☆Visit site -
Best forApps needing straightforward exchange-rate lookups
A focused REST API for live and historical exchange-rate lookups.
- Historical data
7.2/10★★★★☆Visit Abstract API -
Best forResearchers accessing climate and weather datasets
A free REST API for querying climate datasets, observations, stations, and locations.
- Historical data
7.1/10★★★★☆Visit NOAA NCEI -
Best forBusinesses validating and standardizing addresses
A developer-focused address API with validation, correction and delivery signals at usage-based prices.
7.0/10★★★★☆Visit Google Maps -
Best forOrganizations needing corporate records and relationships
Corporate and officer records, relationships and filings via search, REST API or bulk delivery.
6.9/10★★★☆☆Visit OpenCorporates -
Best forOrganizations integrating SIX datasets into applications
Programmatic SIX financial-data access for organizations integrating datasets into their applications.
6.5/10★★★☆☆Visit SIX
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | API style | Historical data | Score |
|---|---|---|---|---|---|---|
| 1 | Massive (formerly Polygon.io) | Yes | $29/mo | Rest | Yes | 8.8 |
| 2 | EODHD | Yes | Rest | Yes | 8.7 | |
| 3 | Alpha Vantage | Yes | Rest | Yes | 8.5 | |
| 4 | Finnhub | Yes | Rest | Yes | 8.4 | |
| 5 | Profit.com Data API | Yes | $16/mo | Rest | Yes | 8.2 |
| 6 | Intrinio | No | $150/mo | Rest | Yes | 8.1 |
| 7 | People Data Labs | Yes | 8.0 | |||
| 8 | Open-Meteo | Yes | Yes | 7.9 | ||
| 9 | The Weather Company Data API | No | Rest | Yes | 7.8 | |
| 10 | Visual Crossing Weather | Yes | Yes | 7.7 | ||
| 11 | Apple WeatherKit | Yes | Rest | Yes | 7.6 | |
| 12 | IPinfo | Yes | $26/mo | 7.5 | ||
| 13 | Open Exchange Rates | Yes | $120/yr | Rest | Yes | 7.4 |
| 14 | Abstract API Exchange Rate API | Yes | Rest | Yes | 7.2 | |
| 15 | NOAA NCEI Web Services | Yes | Free | Rest | Yes | 7.1 |
| 16 | Google Maps Platform Address Validation API | No | $17/unit usage-based | 7.0 | ||
| 17 | OpenCorporates | £2,250/yr | 6.9 | |||
| 18 | SIX Financial Data APIs | 6.5 |
Head-to-head All 28 comparisons →
- Massive (formerly Polygon.io) vs EODHD
- Massive (formerly Polygon.io) vs Alpha Vantage
- Massive (formerly Polygon.io) vs Finnhub
- Massive (formerly Polygon.io) vs Profit.com Data API
- Massive (formerly Polygon.io) vs Intrinio
- Massive (formerly Polygon.io) vs People Data Labs
- Massive (formerly Polygon.io) vs Open-Meteo
- EODHD vs Alpha Vantage
- EODHD vs Finnhub
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How we rank apis data services
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update