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
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