BT 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
Proprietary Paid Enterprise Local Nov 2, 2026IB Interactive Brokers LLC · Financial analysis & investing
In-depth entry Programmatic trading and market-data access to Interactive Brokers accounts through the TWS API, the REST-based Web API and FIX
Proprietary Usage-based Paid Local RedirectedQ QuantConnect Corporation · Financial analysis & investing
In-depth entry Algorithmic trading platform built on the open-source LEAN engine, with cloud backtesting, research notebooks and brokerage-connected live trading
Apache-2.0 Freemium Paid Local Nov 2, 2026T Tiger Data (formerly Timescale) · Relational databases
PostgreSQL extension for time-series data adding hypertables, compression and continuous aggregates, from the company now named Tiger Data
Apache-2.0 AND LicenseRef-Timescale-License Open source Free Self-hosted Nov 2, 2026Z Corporation for Digital Scholarship · Citation management
In-depth entry Free, open-source reference manager with browser connectors, word-processor plugins, a PDF reader, group libraries and optional paid file storage
AGPL-3.0-only Free Open source Local Nov 2, 2026