duckdbC++ core
An in-process SQL OLAP database management system; optimized for analytics and fast queries, similar to SQLite but for analytical workloads.
42.5kupdated 1d ago2.0.0
These databases run inside your Python process, with no server to deploy. DuckDB is an analytical SQL engine: it queries Parquet, CSV and JSON files directly, as well as pandas and Polars DataFrames in memory, and is a common replacement for heavy DataFrame code on large local datasets. chDB embeds the ClickHouse engine in the same way, which helps if you already write ClickHouse SQL.
Analytical2
In-process OLAP SQL engine with the full ClickHouse dialect, zero-copy pandas/Arrow interop, and federation to remote ClickHouse clusters via remoteSecure().
2.9kupdated 11d ago4.4.0
Vector3
lancedbRust core
A developer-friendly embedded retrieval database for multimodal AI.
11.8kupdated today0.40.0
chromadbRust core
An open-source embedding database for building AI applications with semantic search.
29.6kupdated 1d ago1.5.9
zvecC++ core
A lightweight, in-process vector database that embeds directly into applications.
16.1kupdated 2d ago0.8.0
Key-Value & Document1
