Directory

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

Kevin Sheppard's Python package for univariate ARCH/GARCH volatility models, bootstraps, multiple-comparison procedures, unit-root and cointegration tests

Commercial Windows econometrics package for time-series estimation, forecasting and macro modelling, sold as single-user, volume, University and free Student Lite editions

Free, GPL-licensed cross-platform econometrics program with a GUI, the hansl scripting language and estimators for time series, panels and limited dependent variables

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'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

Pull-based metrics monitoring system and time-series database with the PromQL query language, service discovery and the Alertmanager component

Commercial statistical software from StataCorp widely used in economics and social science, with editions BE/SE/MP, a command language, Mata and comprehensive PDF manuals

PostgreSQL extension for time-series data adding hypertables, compression and continuous aggregates, from the company now named Tiger Data

Python library for vectorized backtesting and portfolio analysis built on pandas, NumPy and Numba, with a commercial PRO edition

Community-maintained fork of Quantopian's Zipline, an event-driven Python backtester with data bundles and the Pipeline API