Sunday, October 5, 2025

1. 1

   

   EODHD (EOD Historical Data)

   Global market-data API provider offering both REST and WebSocket access. The free tier includes delayed quotes (15–20 minutes), while premium plans unlock real-time streaming for US equities, forex, and crypto (up to 50 tickers). Intraday, tick-level, and certain specialized datasets are available as add-ons. Rate limits scale up to 1,000 requests per minute, with daily caps depending on plan tier.

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   Pricing: Free, SubscriptionPlatforms: Web, API
2. 2

   

   Financial Modeling Prep (FMP)

   Market data delivered through REST and WebSocket APIs. Plans scale by geography and depth: Starter covers U.S. markets, Premium adds UK/Canada and extended history, and Ultimate unlocks global coverage, transcripts, fund and 13F data, one-minute intraday, and bulk delivery options. Bandwidth and query limits vary by plan.

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   Pricing: Free, SubscriptionPlatforms: Web, API
3. 3

   

   Roic AI

   Roic AI offers financial data, transcripts, screeners, and exports under a tiered plan structure. Free users get US-only annual financials with no downloads. Paid tiers expand to global coverage with quarterly/TTM data, Excel export, API access, and unlimited downloads. Enterprise plans unlock multi-user access, commercial API rights, and higher bandwidth. Earnings call transcripts are limited to US companies across all plans.

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   Pricing: Free, SubscriptionPlatforms: Web, API
4. 4

   

   SEC API (sec-api.io)

   A commercial API suite for SEC/EDGAR data, designed for developers, quants, and compliance teams. The free tier includes 100 calls per month. Paid tiers unlock higher rate limits, more data (5 GB vs 15 GB monthly, with $0.30/GB overage), and features such as multiple API keys or redistribution rights for enterprise users. The platform emphasizes speed, with new filings typically available in under 300 ms.

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   Pricing: Free, SubscriptionPlatforms: Web, API
5. 5

   

   Alpha Vantage

   REST APIs delivering global market data in JSON and CSV. The free tier allows 25 requests per day, while premium plans remove limits and unlock real-time and 15-minute delayed US equities plus real-time US options. Entitlements and account management are handled through the Alpha X Terminal.

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   Pricing: Free, SubscriptionPlatforms: Web, API
6. 6

   

   FINVIZ

   A popular stock screener and charting platform best known for its heat maps, visualization tools, and simple interface. The Free tier is ad-supported with delayed U.S. market data, while FINVIZ Elite unlocks real-time quotes (including pre- and after-hours), intraday chart layouts, backtesting, ETF full-holdings, exports and APIs, alerts, and larger portfolio/watchlist limits. Coverage is U.S. equities only. Elite includes a 7-day free trial with no credit card required.

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   Pricing: Free, SubscriptionPlatforms: Web, API
7. 7

   

   Fiscal.ai

   A global equities and funds data platform enhanced with AI-driven summaries and Copilot tools. Features range from screeners and dashboards to analyst estimates, ownership datasets, and filings. Plans are gated by data history, AI prompt limits, event counts, and export access. Enterprise unlocks click-through auditability into source filings and U.S. as-reported views, with exports rolling out internationally. The API provides fundamentals, KPIs, and delayed pricing. SOC 2 Type II certified with a public status page.

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   Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
8. 8

   

   Portfolio123

   Quant research and live-deployment platform with point-in-time fundamentals and estimates. Users can screen, backtest, and simulate strategies, then deploy them live with broker integrations. Supports API access and a no-code desktop DataMiner. FactSet or S&P Compustat licenses are required for full historical fundamentals.

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   Pricing: Free, SubscriptionPlatforms: Web, Desktop, API
9. 9

   

   Quartr

   Quartr brings together earnings calls, transcripts, filings, reports, and slides into one platform. The free mobile app is consumer-friendly, while Quartr Pro (desktop) and the API are enterprise products sold on a custom basis. The API is generous—paying customers get effectively unlimited calls, demo accounts are capped, and a 50 rps global rate limit goes into effect in December 2025. Live audio and transcripts are delivered in real time, making it a go-to tool for analysts who don’t want to wait.

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   Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
10. 10

    

    SEC.gov (EDGAR)

    The official source of U.S. regulatory filings. EDGAR provides free public access through its web portal, JSON data APIs, and structured RSS feeds (updated every 10 minutes). Developers can use the APIs on data.sec.gov for submissions and XBRL datasets, while filers use separate EDGAR Next APIs that require tokens. No email alerting is provided—RSS is the only push channel. Automated access must respect fair-use guidelines, including a descriptive User-Agent.

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    Pricing: FreePlatforms: Web, API

11. 11

    

    Unusual Whales

    Real-time options flow and dark-pool analytics built for active traders. Free plans view delayed data; paid tiers stream live flow, with annual plans unlocking data downloads. The public API is sold separately, and “Periscope” (market-wide SPX exposure) is available as an add-on.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
12. 12

    

    Bank of England (Statistics & Data)

    Free central bank data portal covering UK interest rates, yield curves, macroeconomic indicators, and daily reference series. The Statistical Database supports programmatic downloads in CSV, Excel, and XML via documented query parameters, while yield-curve data are published daily but not accessible by API. GBP daily spot rates are provided on an indicative basis, typically updated by 09:30 within two working days.

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    Pricing: FreePlatforms: Web, API
13. 13

    

    Benzinga

    Financial news publisher offering both a real-time trading terminal (Benzinga Pro) and licensed data APIs. Subscription tiers progressively unlock tools such as advanced newsfeeds, equity squawk audio, signals, scanners, and calendars. Paid plans include Nasdaq Basic real-time quotes, and optional add-ons like High Beta Squawk. Scanner results can be exported to CSV.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
14. 14

    

    BIS Data Portal (Bank for International Settlements)

    Official BIS portal for global monetary/financial statistics with an SDMX REST API and bulk downloads. Covers international banking (locational/consolidated), debt securities, credit to the non‑financial sector, global liquidity, exchange‑traded & OTC derivatives, Triennial FX/IR derivatives turnover, property prices, consumer prices, effective/bilateral exchange rates, and central bank statistics (policy rates, total assets). Features include a release calendar (with RSS), shareable query links, bookmarks, custom charts/tables, and export to Excel/CSV/PDF. API adheres to the SDMX REST v2.1 spec; formats include JSON, XML, and CSV.

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    Pricing: FreePlatforms: Web, API
15. 15

    

    Business Quant

    A U.S. equities research platform combining fundamentals, ownership data, and operating metrics. The free plan includes 15+ years of history with delayed updates. Pro subscribers get daily updates, KPI datasets, and data downloads, while Enterprise adds API access and rights for commercial use.

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    Pricing: Free, SubscriptionPlatforms: Web, API
16. 16

    

    CFPB Consumer Complaint Database

    Official U.S. Consumer Financial Protection Bureau (CFPB) database of consumer financial complaints. Complaints are published after the company responds or after 15 days (whichever comes first); the database generally updates daily. Narratives are published only with consumer consent and are scrubbed to remove personal information. The dataset includes product/issue taxonomies, company names, location fields (state/ZIP with privacy rules), submission channel, dates, company response categories, timeliness, tags (e.g., servicemember, older adult) and more. UI provides filters, trends, and maps; API returns JSON/CSV/Excel formats for programmatic use.

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    Pricing: FreePlatforms: Web, API
17. 17

    

    CME FedWatch Tool

    Official CME probabilities for upcoming FOMC decisions, derived from 30‑Day Fed Funds (ZQ) futures. Web tool provides meeting‑by‑meeting probability matrices, comparisons over time, a historical download, and a Dot Plot view. A paid REST API is available for programmatic access. CME documents the probability‑tree methodology clearly; API snapshots update on business days at ~01:45 UTC. Media usage asks attribution to “CME FedWatch.”

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    Pricing: Free, SubscriptionPlatforms: Web, API
18. 18

    

    Danelfin

    AI-driven scoring and ranking platform for U.S.-listed stocks, ETFs, and the STOXX 600 in Europe. Offers Free, Plus, and Pro web tiers alongside API-only plans. Historical daily AI Scores are available back to 2017 for Pro/API users. Scores refresh end-of-day, typically about 15 hours after the U.S. close. CSV export and JSON API access are plan-gated.

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    Pricing: Free, SubscriptionPlatforms: Web, API
19. 19

    

    Dune

    Community-powered, cross-chain analytics platform with SQL-based dashboards and a production API. Supports 100+ blockchains (raw, decoded, and curated ‘Spellbook’ tables). API returns JSON/CSV from saved queries and preset endpoints (DEX, markets, Farcaster, contracts, etc.).

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    Pricing: Free, SubscriptionPlatforms: Web, API
20. 20

    

    ECB Data Portal

    Official ECB gateway for euro‑area statistics with an open SDMX 2.1 REST API. The new endpoint is https://data-api.ecb.europa.eu/service/ (replacing the legacy SDW path). Content negotiation supports SDMX‑JSON, CSV, and SDMX‑ML. Charts and tables can be downloaded as CSV/XLS (long & wide), and charts as PNG/PDF/PPT. Typical update cadence is daily to monthly (e.g., reference FX rates around 16:00 CET on working days). ECB advises migrating from the old SDW URL as automatic redirects are planned to end on 1 Oct 2025.

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    Pricing: FreePlatforms: Web, API
21. 21

    

    Estimize

    Crowdsourced earnings and macro estimates platform. The free community tier lets you view and contribute forecasts, while Premium ($99/month) unlocks the full dataset without contributing, plus screening and alerts. Enterprise clients can access data through real-time APIs, daily FTP feeds, or Excel files. A public REST API exists for community data.

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    Pricing: Free, SubscriptionPlatforms: Web, API
22. 22

    

    ETF Action

    Independent ETF analytics platform for advisors and asset managers. Offers global ETF classification, look‑through holdings analytics, overlap analysis, flows/volumes with T+1 flow timing, live quotes (FMV) via Polygon.io, model portfolio tools, 13F screening (Advisor Pro), and enterprise options including API access. DIY/Advisor Pro plans emphasize self‑service research and Excel/CSV downloads; Enterprise adds collaboration, custom dashboards, and API. A separate Model Builder plan enables model uploads and ‘Bridge’ trading integration. API details are not publicly documented—confirm endpoints and auth with vendor.

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    Pricing: Free, SubscriptionPlatforms: Web, API
23. 23

    

    European Central Bank (ECB)

    The official portal of the European Central Bank, including its Data Portal. Provides free access to monetary policy information, publications, and structured datasets. Data is available through a public SDMX 2.1 REST API with CSV and SDMX-JSON formats, bulk downloads, and chart-level exports. Key scheduled releases include €STR at 08:00 CET, FX reference rates around 16:00 CET, and daily euro area yield curves at 12:00 CET.

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    Pricing: FreePlatforms: Web, API
24. 24

    

    FDIC — BankFind Suite (Institutions & API)

    Official FDIC hub to search FDIC‑insured institutions and programmatically pull institution demographics, branch locations, structural events (mergers/changes), failures & assistance transactions, Summary of Deposits (SOD), and financials. BankFind exposes a public REST API with JSON/CSV output and Elastic‑style filter syntax. Demographic data update weekly; financial data quarterly; SOD is annual (as of June 30). Keys are supported but currently not required. Bulk downloads limit: one quarter for financials and one year for SOD per request.

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    Pricing: FreePlatforms: Web, API
25. 25

    

    Federal Reserve Bank of New York — Data & Statistics

    Official New York Fed hub for rates, markets operations data, and research indicators. Highlights: reference rates (EFFR, OBFR, SOFR & SOFR Averages/Index), Markets Data Dashboard, SOMA holdings & operations results, Primary Dealer Statistics, GSCPI, SCE microdata, and regional surveys (e.g., Empire State Manufacturing). Markets Data APIs and page-level export tools provide JSON/CSV/XML/Excel programmatic access. Publication times for key rates are stated (e.g., SOFR ~8:00 a.m. ET; EFFR ~9:00 a.m. ET).

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    Pricing: FreePlatforms: Web, API
26. 26

    

    Federal Reserve Board (FRB.gov)

    The official website of the U.S. central bank. Through its Data Download Program (DDP), the Fed offers public access to many of its most important statistical releases in Excel, CSV, or XML formats. Key datasets include interest rates, the Fed balance sheet, commercial bank assets, foreign exchange rates, industrial production, and financial accounts. The site also hosts FOMC calendars, meeting minutes, press releases, speeches, and other policy materials.

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    Pricing: FreePlatforms: Web, API
27. 27

    

    Find and update company information (Companies House)

    The official UK companies register, providing free search and access to filing histories, document images, and company information. Users can follow companies for email alerts on new filings, and bulk data is available via monthly downloads. Certified copies and certificates are offered for a fee. Developers have access to REST and Streaming APIs with clear rate limits, making the service a reliable, real-time regulatory source.

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    Pricing: FreePlatforms: Web, API
28. 28

    

    Fintel

    Platform for ownership, filings, short interest, and options sentiment with broad global coverage. Plans range from Free through Bronze, Silver, and Gold, with premium features like the Workbench, Portfolio Builder, and custom quant models reserved for higher tiers. Real-time options flow, unusual options activity, and Excel export are available on paid plans. Broker account linking is supported via Plaid (U.S. only).

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    Pricing: Free, SubscriptionPlatforms: Web, API
29. 29

    

    FlightAware

    A global flight-tracking platform offering free web and mobile access to live flight data. Premium subscriptions add unlimited alerts and extended historical lookback. Enterprise offerings include AeroAPI (REST), Firehose (streaming), and Rapid Reports (one-off email deliveries).

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    Pricing: Free, Subscription, One-timePlatforms: Web, Mobile, API
30. 30

    

    FRED (Federal Reserve Economic Data)

    One of the most trusted sources of macroeconomic and market data worldwide. FRED offers free access to charts, releases, Excel add-ins, and a public API. An API key (free) is required, with standard rate limits. ALFRED, the companion service, provides vintage datasets so you can see what was known at any point in time.

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    Pricing: FreePlatforms: Web, Mobile, API
31. 31

    

    Glassnode

    On-chain market intelligence platform covering BTC, ETH and multi-asset crypto with derivatives, spot/ETF, and DeFi datasets. Studio offers charts, Workbench (custom formulas), dashboards and alerts (email/Telegram). A production REST API is available as a paid add-on to the Professional plan, with plan-based credits and rate limiting. Metric resolutions include 10-minute, 1-hour, daily, weekly and monthly; new datapoints typically publish ~10 minutes after each aggregation window ends. Entity-adjusted and point-in-time metric variants are available for backtesting integrity.

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    Pricing: Free, SubscriptionPlatforms: Web, API
32. 32

    

    Intrinio

    Financial data vendor offering flexible dataset-level subscriptions and bulk one-time downloads. Real-time options require OPRA licensing, though a lighter 'OptionsEdge' product avoids that complexity. Data is delivered via REST, WebSocket, CSV, or integrations like Snowflake, S3, and FTP.

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    Pricing: Subscription, One-timePlatforms: Web, API
33. 33

    

    Listen Notes

    Podcast search engine plus developer Podcast API (search/directory/insights) and purchasable datasets. Free plan allows light testing; PRO is a metered subscription with tiered overages and specific search‑result/rate‑limit allowances; Enterprise relaxes caching/logo rules and increases quotas & SLAs. Listen Alerts monitors 3.6M+ podcasts for keyword mentions with email/RSS and Zapier/IFTTT hooks. Datasets can be exported as CSV/SQLite for analytics, PR/sales, and finance alt‑data use cases. API base URL is https://listen-api.listennotes.com/api/v2 with API‑key auth.

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    Pricing: Free, Subscription, One-timePlatforms: Web, API, Mobile
34. 34

    

    MacroMicro

    Global macro and market analytics platform with data visualizations, ETF tools, backtesting, and AI-powered earnings summaries. Data downloads are gated to Business plans, while API access is offered as a separate annual plan (API Essential). Annual subscribers also get calendar sync and watermark-free chart exports for commercial use.

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    Pricing: Free, SubscriptionPlatforms: Web, API
35. 35

    

    MarineTraffic

    Global AIS vessel tracking platform with map views, alerts, voyage history, and data exports. Many features are plan-gated: CSV export quotas, Past Track history, detailed Route Forecasts, and the number of Custom Areas you can define. API access is available with an API key, and mobile apps provide push notifications.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
36. 36

    

    marketstack

    A global market data API with free and paid tiers. End-of-day coverage spans 15+ years and 500k+ tickers, while intraday and real-time access are unlocked on higher plans. Rate limits apply: 5 requests per second globally, with some endpoints (like ETF holdings) counting as multiple calls. Premium tiers add features like SEC/EDGAR filings, analyst ratings, and bond/index data. Data is sourced from Tiingo for U.S. markets, and uptime is tracked on a public status page.

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    Pricing: Free, SubscriptionPlatforms: Web, API
37. 37

    

    Observatory of Economic Complexity (OEC)

    A global trade and economic complexity platform with rich visualizations, country and product rankings, and an API. Pro plans unlock the latest monthly and subnational datasets, while Premium adds company-level Bill of Lading data and bulk downloads. Academic discounts and enterprise options with SSO support are also available.

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    Pricing: Free, SubscriptionPlatforms: Web, API
38. 38

    

    Office of Financial Research (U.S. Treasury)

    U.S. Treasury’s OFR publishes free, methods‑backed monitors and datasets (Short‑term Funding Monitor, U.S. Money Market Fund Monitor, Bank Systemic Risk Monitor, and the daily OFR Financial Stress Index). STFM and HFM provide open JSON APIs (no keys), CSV downloads are available from some monitors. Updates are end‑of‑day with documented lags (e.g., FSI ~T+2 business days; repo series T+1/T+2 depending on segment).

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    Pricing: FreePlatforms: Web, API
39. 39

    

    okama

    Free open-source toolkit for portfolio analysis and market data. Okama offers web widgets, an API, and a Python library with efficient frontiers, risk metrics, and Monte Carlo simulations. Market and macro data is available end-of-day, with live prices delayed by ~15–20 minutes.

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    Pricing: FreePlatforms: Web, API
40. 40

    

    Open Payments (CMS)

    U.S. federal open‑data program (Affordable Care Act ‘Sunshine Act’) that publishes financial relationships between drug/device manufacturers (and GPOs) and healthcare providers (physicians, NPPs since PY2021, and teaching hospitals). CMS publishes the prior program year’s full datasets on or before June 30 each year and issues a January refresh. Data are accessible via the web search tool, bulk downloads, and a REST Open Data API (filter, query, aggregate).

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    Pricing: FreePlatforms: Web, API
41. 41

    

    OpenBB

    Open-source data and analytics platform with a REST API, Python SDK, and an enterprise workspace for custom dashboards and apps. The free Community plan includes unlimited dashboards and 20 AI Copilot queries per day. Pro adds collaboration features, Excel integration, secure deployment (VPC/on-prem), and export options. Infrastructure is SOC 2 Type II certified, with SSO support and a public status page.

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    Pricing: Free, SubscriptionPlatforms: Web, API
42. 42

    

    OpenCorporates

    The world’s largest open database of legal entities, offering both a public-facing search and an API. Free access is available for personal or public-benefit use, while commercial API access and bulk datasets require a paid plan. Bulk deliveries are provided via SFTP in CSV format, and the platform includes a public status page for web, API, knowledge base, and SFTP availability.

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    Pricing: Free, SubscriptionPlatforms: Web, API
43. 43

    

    ORTEX

    Analytics platform focused on short interest and securities lending, with additional coverage of options flow, insider trades, analyst views, and index rebalances. Offers a free tier with limited features, plus paid plans (Basic $39/mo, Advanced $129/mo). Options data is sourced from OPRA and requires agreeing to OPRA terms. API access is available with key-based authentication, and an Excel Add-in (beta) supports short interest data.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
44. 44

    

    OTC Markets

    Primary operator and market data source for U.S. OTC equities via OTC Link ATS/ECN/NQB (SEC‑regulated ATSs). Commercial data products include Real‑Time Level 1+ (inside quote & trades), Level 2+ (full quote book with MPIDs), 15‑minute delayed Level 1+, End‑of‑Day, reference/security master, and compliance datasets (Blue Sky, Promotion/CE, Compliance Analytics). Delivery options include real‑time multicast feeds, SFTP/FTP files, and a REST Disclosure API. Website provides delayed quotes, corporate actions, screeners and issuer news (DNS).

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    Pricing: Free, SubscriptionPlatforms: Web, API
45. 45

    

    QuantRocket

    A Docker-based research, backtesting, and live-trading platform built around Jupyter. The free tier is limited to research, while paid plans unlock live and paper trading along with bundled US minute-bar data. Broader global datasets are available via third-party providers. Its tight IBKR integration brings advanced order types, while real-time market data can be streamed from IBKR, Polygon, or Alpaca.

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    Pricing: Free, SubscriptionPlatforms: Web, API
46. 46

    

    Quiver Quantitative

    Premium unlocks stock screeners, alerts, backtesters for Congress and institutional trades, strategy dashboards, Smart Score/Bull–Bear ratings, customizable watchlists, early access to news/videos, and data export samples. Copytrading is available through partner Quantbase. Premium runs $25/month or $300/year with a free trial (7 days on monthly, 30 days on annual). The Quiver API is sold separately under tiered plans (Hobbyist, Trader, Institution).

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
47. 47

    

    SEC EDGAR — Company Filings (Full‑Text Search & Search Filings)

    Primary U.S. source for public company, fund, and insider filings. The Full‑Text Search covers filings since 2001 (including exhibits), while the ‘Latest Filings’ view shows near‑real‑time submissions as they are processed. Search tools include Company search, Mutual Fund & Variable Insurance product search, CIK lookup, and RSS subscriptions. Developers can consume JSON via data.sec.gov (Submissions, XBRL Company Facts/Concepts/Frames). Programmatic access must include a descriptive User‑Agent and respect the SEC fair‑access limit (currently 10 requests/sec).

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    Pricing: FreePlatforms: Web, API
48. 48

    

    Semrush

    Comprehensive SEO, marketing, and web traffic analytics platform. API access for core Analytics and Projects requires a Business plan, with usage billed in API units. Some APIs—like Listing Management and Map Rank Tracker—don’t consume units. Enterprise security options include SAML SSO on Guru and Business tiers. A 7-day free trial is available for all paid plans.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
49. 49

    

    Similarweb

    Digital intelligence platform providing website and app traffic data, engagement benchmarks, and competitive insights. API access is sold separately or bundled with Enterprise plans, and is required for most native integrations (Excel, Sheets, Tableau, Power BI, Salesforce, HubSpot, Snowflake, Databricks). Webhooks support daily and monthly data release notifications. A free DigitalRank API offers basic website ranking data.

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    Pricing: Free, SubscriptionPlatforms: Web, API
50. 50

    

    Social Blade

    Analytics for social channels including YouTube, TikTok, Twitch, Instagram, and Facebook. Features include rankings, projections, and estimated earnings. Premium expands historical data access (daily charts up to three years for YouTube, ten years for other platforms), increases favorite slots, removes ads, and includes Business API credits. A free tier is available with limited history and functionality.

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    Pricing: Free, SubscriptionPlatforms: Web, API
51. 51

    

    Tiingo

    Flat-rate market data platform with simple, transparent plans. Tiingo provides end-of-day and real-time APIs for equities, mutual funds, ETFs, forex, and crypto, alongside corporate actions, fundamentals, and news. Plans range from a free Starter tier to affordable paid subscriptions, with usage limits and data history varying by plan. Enterprise or commercial use is supported via higher tiers.

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    Pricing: Free, SubscriptionPlatforms: Web, API
52. 52

    

    Trackinsight

    Global ETF research platform with a 12k+ ETF database and daily updates. Core workflows: screen by theme/ESG/exposure/benchmark; compare up to 5 ETFs side‑by‑side (Excel export); manage sharable ‘Lists’; and (Premium) Portfolio Insights with advanced analytics & Excel export. Data/API options include an enterprise ‘Data Services’ offering and Nasdaq Data Link databases (REST/CSV/JSON). Identifiers shown on fund pages include ISIN and CUSIP. Trackinsight became majority‑owned by Kepler Cheuvreux in Sep 2024.

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    Pricing: Free, SubscriptionPlatforms: Web, API
53. 53

    

    Trading Economics

    Trading Economics provides economic indicators, financial market data, forecasts, and news for over 150 countries. Its web and mobile Analytics plans bundle site features, alerts, and research dashboards, while API access is offered separately with usage-based pricing. Streaming feeds for calendars, markets, and earnings require API credentials. Plans range from free website access to professional subscriptions for institutional workflows.

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    Pricing: Free, SubscriptionPlatforms: Web, Mobile, API
54. 54

    

    USAspending

    Official U.S. federal spending open‑data portal mandated by the DATA Act and operated by Treasury’s Bureau of the Fiscal Service. The public REST API powers the site (GET/POST endpoints, JSON responses). Data refreshes daily after a nightly pipeline; underlying source systems update on different cadences (e.g., monthly for Files A/B/C via the DATA Act Broker; next‑day for FPDS contracts; FABS within 2 weeks; FSRS subawards by month‑end; GTAS monthly). Bulk downloads and archives are available for awards back to FY2008.

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    Pricing: FreePlatforms: Web, API
55. 55

    

    Wayback Machine (Internet Archive)

    General‑purpose web archiving used widely in financial research to cite and compare historical webpages (IR pages, fund fact sheets, product sites). Save Page Now (SPN2) enables on‑demand snapshots with options like outlink capture and full‑page screenshots. Availability and CDX APIs expose snapshot discovery; Memento provides time‑based negotiation. Rate limits/quotas apply to SPN2; crawling and replay behavior may vary by target site robots/policies. Some large platforms (e.g., Reddit) restrict Wayback access to content.

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    Pricing: FreePlatforms: Web, API, Mobile
56. 56

    

    World Bank Open Data (data.worldbank.org)

    Global macroeconomic and development indicators with fully open access. The Indicators API requires no API key, and the DataBank portal supports direct downloads in CSV, Excel, TXT, and SDMX. Most datasets are available under the CC BY 4.0 license, though a few third-party series carry different terms.

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    Pricing: FreePlatforms: Web, API