3 tools
Apache Software Foundation · Data catalogs & formats
Open table format for data lakes that adds ACID snapshots, schema and partition evolution and time travel over Parquet, ORC or Avro files
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
Delta Lake project (Linux Foundation; created by Databricks) · Data catalogs & formats
Open table format with a transaction log over Parquet files, created by Databricks and hosted by the Linux Foundation, with Spark, Rust and Python implementations
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