Apache Parquet
Apache Software Foundation · Data catalogs & formats
Open columnar file format for analytical data with compression, encodings and statistics, readable by nearly every data engine and library
Apache-2.0Open sourceFreeLocalNov 2, 2026
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Databento
Databento, Inc. · Market & fundamentals data
Usage-priced market data platform with normalized order-book (MBO/MBP), trades, OHLCV and reference schemas for futures, options and equities, delivered via historical, live and batch APIs in the DBN format
MixedUsage-basedPaidNov 2, 2026
FirstRate Data
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
ProprietaryPaidAcademicNov 2, 2026
Wharton Research Data Services (WRDS)
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
ProprietaryEnterpriseAcademicNov 2, 2026
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