Hyperloglog Python Packages

datasketch

MinHash, LSH, LSH Forest, Weighted MinHash, HyperLogLog, HyperLogLog++, LSH Ensemble and HNSW

hyperloglog

Hyper LogLog (native and sliding) cardinality counters

hll

Fast HyperLogLog for Python.

zetasketch-py

Rust port of the Google Zetasketch library | read-only mirror of https://codeberg.org/danvratil/zetasketch-rs

llm-sketchkit

Count distinct LLM users and find top token consumers across services, days and tools. Fast, small, portable summaries in Go and Python.

hazy

Fast, mergeable probabilistic data structures for Python

cardinalitykit

A comprehensive Python toolkit for cardinality estimation algorithms (Flajolet-Martin, LogLog, SuperLogLog, HyperLogLog, HyperReal) — enabling privacy-preserving analytics, audience measurement, and sample-to-population extrapolation through probabilistic counting techniques.

samkhya

Engine-agnostic Rust SDK for portable, feedback-driven cardinality correction in embedded analytical engines: DataFusion, DuckDB, Polars, Postgres, Iceberg, Arrow, GPU, Python. One Corrector trait — GBT, TabPFN-2.5, LLM. LpJoinBound never-regress clamp. Apache-2.0.

pfutil

Fast and Redis-compatible HyperLogLog extension for Python 3

randomhash

A simple, time-tested, family of random hash functions in Python, based on CRC32 and xxHash, affine transformations, and the Mersenne Twister. 🎲

sketch-ds

C++ Implementations of sketch data structures with SIMD Parallelism, including Python bindings