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A software library of stochastic streaming algorithms, a.k.a. sketches.

Core C++ Sketch Library

High performance native memory access for Java.

Website for DataSketches.

A software library of stochastic streaming algorithms, a.k.a. sketches.

PostgreSQL extension providing approximate algorithms based on apache/datasketches-cpp

A software library of stochastic streaming algorithms, a.k.a. sketches.

Sketch adaptors for Hive.

A monthly collaboration project between Shirley & Nadieh

Integrates DuckDB with the high-performance Apache DataSketches library. This extension enables users to perform approximate analytics on large-scale datasets using state-of-the-art streaming algorithms, all from within DuckDB.

Apache datasketches

Apache datasketches

Data Sketches for Apache Spark

Apache datasketches

Sketch Library for vector-based models

Sketch data structures for Ruby

Rusty wrapper for Apache DataSketches

Java Sketch Characterization Code.

A presentation about data sketches

Sketch adaptors for Pig.

Integrating probabilistic algorithms into Spark using DataSketches

State-of-the-art DataSketches library (2025) - UltraLogLog, Binary Fuse Filters, DDSketch, and more

Original DataSketches Website

Druid extension that adds useful new aggregators and post aggregators for the Datasketches Tuple Sketch

A unified framework for tabular data preprocessing in federated learning.

Apache datasketches

Stochastic streaming algorithms for approximate computation on large datasets. Includes KLL, HLL, Theta, Count-Min, and REQ sketches.

Rewrite of https://github.com/apache/datasketches-java in Go

Apache datasketches JDK16 experimental