18 tools
Alpha Vantage Inc. · Market & fundamentals data
REST API for stock, ETF, options, forex, crypto, commodity and economic data plus fundamentals, news sentiment and technical indicators, with a free key tier and premium plans
Bloomberg L.P. (FIGI Registration Authority) · Market & fundamentals data
Bloomberg's subscription workstation for market data, news, analytics, messaging and execution, with Excel integration and the BLPAPI library for C++, Java, .NET and Python
Crossref · Research dissemination
Membership organization that registers DOIs for scholarly content and exposes the metadata through a free public REST API, content negotiation and the paid Metadata Plus service
Elicit · Literature discovery & review
AI research assistant that finds papers, extracts structured data from them into tables and runs systematic-review style workflows and reports
FirstRate Data LLC · Market & fundamentals data
Vendor of historical intraday market data (1-minute to daily bars, tick and options) for US stocks, ETFs, futures, indices, crypto and FX, delivered as zipped CSV bundles under a perpetual licence
Federal Reserve Bank of St. Louis · Market & fundamentals data
Free economic database from the St. Louis Fed aggregating hundreds of thousands of US and international time series, with graphs, vintages (ALFRED), an Excel add-in and a keyed JSON/XML API
International Monetary Fund · Open & public data
The IMF's statistical portal for World Economic Outlook, fiscal, balance-of-payments, reserves and price datasets with SDMX 2.1 and 3.0 APIs
Interactive Brokers LLC · Financial analysis & investing
Programmatic trading and market-data access to Interactive Brokers accounts through the TWS API, the REST-based Web API and FIX
Payward, Inc. (Kraken) · Financial analysis & investing
REST, WebSocket and FIX interfaces to the Kraken cryptocurrency exchange for market data, spot and derivatives trading and account management
Massive (Polygon.io, Inc.) · Market & fundamentals data
Market data platform (renamed from Polygon.io in October 2025) with REST and WebSocket APIs, flat files and SQL access for US stocks, options, indices, forex, crypto and futures
Nasdaq, Inc. · Market & fundamentals data
Nasdaq's marketplace for financial, economic and alternative datasets (formerly Quandl) with a REST API, time-series and table endpoints and Python, R and Excel clients
Bloomberg L.P. (FIGI Registration Authority) · Market & fundamentals data
Free API and web tool from Bloomberg for mapping tickers, ISINs, CUSIPs and other identifiers to public-domain FIGI instrument identifiers, with search and filter endpoints
Scite LLC (Research Solutions) · Literature discovery & review
Citation-analysis platform whose Smart Citations show whether later papers support, contrast or merely mention a claim, with an AI assistant and reference checking
U.S. Securities and Exchange Commission · SEC/EDGAR & corporate filings
The SEC's free public filing system: company and full-text search, bulk index and feed archives, and data.sec.gov JSON APIs for submissions and XBRL financial facts, subject to a fair-access rate policy
Allen Institute for AI (Ai2) · Literature discovery & review
Free AI-assisted literature search from Ai2 with an Academic Graph API, recommendations and downloadable datasets of papers, authors and citations
Statistics Canada (Government of Canada) · Open & public data
Canada's national statistical agency publishing census, economic and social data tables with open licensing and programmatic access via Web Data Service
The Wharton School, University of Pennsylvania · Market & fundamentals data
Institution-subscribed research data platform from Wharton hosting CRSP, Compustat, TAQ, OptionMetrics and dozens of other vendors' databases with web queries, SQL, SAS, Python and R access
World Bank Group · Open & public data
Free access to World Bank development indicators by country and year through a web portal, bulk downloads and a public REST API
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