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Top 8 Python nearest-neighbor-search Projects
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Project mention: Meilisearch – search engine API bringing AI-powered hybrid search | news.ycombinator.com | 2025-04-14
Try LanceDB https://github.com/lancedb/lancedb
It’s based off of the data fusion engine, has vector indexing and BM 25 indexing, has pipes on and rust bindings
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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similarity
TensorFlow Similarity is a python package focused on making similarity learning quick and easy.
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Project mention: Spann: Highly-Efficient Billion-Scale Approximate Nearest Neighbor Search | news.ycombinator.com | 2024-11-02
If you just want in-memory then PyNNDescent (https://github.com/lmcinnes/pynndescent) can work pretty well. It should install easily with pip, works well at the scales you mention, and supports a large number of metrics, including cosine.
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lshashing
python library to perform Locality-Sensitive Hashing for faster nearest neighbors search in high dimensional data
Project mention: Show HN: Locality-Sensitive Hashing in Python for Faster Nearest Neighbor Search | news.ycombinator.com | 2024-08-15 -
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tinyknn
A tiny approximate K-Nearest Neighbour library in Python based on Fast Product Quantization and IVF
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
Python nearest-neighbor-search discussion
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Index
What are some of the best open-source nearest-neighbor-search projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | lancedb | 6,576 |
| 2 | docarray | 3,069 |
| 3 | similarity | 1,019 |
| 4 | pynndescent | 925 |
| 5 | quaterion | 656 |
| 6 | citrus | 104 |
| 7 | lshashing | 19 |
| 8 | tinyknn | 16 |
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