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Vector databases

Databases and indexes that store vectors and find the ones nearest to a query.

39 projects. Checked .

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The Featured projects with the most downloads.

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Order: strongest tier first, then most downloads, then name, with unmeasured values last. A library counts downloads over 30 days. An app counts binary downloads per release. An app with none counts its crate downloads over 30 days.

What do the tiers mean?
Featured
Shown first. It passes every Featured gate.
Listed
Shown in the normal listing. No other tier applies.
New
A project whose first release is recent.
Archived
No longer maintained, or ended by its author.

Tiers come from published rules over raw signals. Stars alone never qualify a project.

Active dependents: crates from other owners that depend on this project in a current release. One owner counts at most once.

Movement needs more history.

ProjectDownloadsDependentsStarsLatest releaseRuns on (GPU)Native codeLicense
lancedb Featured

LanceDB: A serverless, low-latency vector database for AI applications

 102 11,863 0.41.0 Apache-2.0
kiddo Featured

A high-performance, flexible, ergonomic k-d tree library. Ideal for geo- and astro- nearest-neighbour and k-nearest-neighbor queries

 56 179 6.3.0 Apache-2.0 OR MIT
kdtree-rs Featured

K-dimensional tree in Rust for fast geospatial indexing and nearest neighbors lookup

 29 286 0.8.1 Apache-2.0 OR MIT
usearch Featured

Smaller & Faster Single-File Vector Search Engine from Unum

 70 4,373 2.26.6 Apache-2.0
hnswlib-rs Featured

Rust implementation of the HNSW algorithm (Malkov-Yashunin)

 86 257 0.3.5 Apache-2.0 OR MIT
surrealdb Featured

A scalable, distributed, collaborative, document-graph database, for the realtime web

 162 33,296 4.0.0 Not measured
qdrant App Featured

Qdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/

and 1 related project

 Not applicable 35,478 Not measured Not measured Apache-2.0
Listed 29 projects
ruvector Listed

High-performance Rust vector database core with HNSW indexing

 51 4,675 2.5.0 CUDA, WebGPU, Metal MIT
pgvectorscale App Listed

Postgres extension for vector search (DiskANN), complements pgvector for performance and scale. Postgres OSS licensed.

 Not applicable 3,161 Not measured Not measured PostgreSQL
arroy Listed

Annoy-inspired Approximate Nearest Neighbors in Rust, based on LMDB and optimized for memory usage

 6 314 0.9.0 MIT
faiss-rs Listed

High-level bindings for Faiss, the vector similarity search engine

 5 250 0.13.0 Apache-2.0 OR MIT
hnsw Listed Dormant

Fast approximate nearest neighbors

 13 268 0.11.0 MIT
velesdb Listed

High-performance vector database engine written in Rust

 0 102 8.1.0 WebGPU Not measured
hora Listed Dormant

Hora Search Everywhere

 4 2,655 0.1.1 Apache-2.0
mentedb Listed

A purpose-built database engine for AI agent memory

 1 124 0.47.1 Apache-2.0
triviumdb Listed

A high-performance memory-mmap hybrid search engine built for AI, combining dense vector, sparse text, graph relations, and JSON metadata.

Python bindings

 0 190 0.9.0 Apache-2.0
vpsearch Listed Dormant

Vantage Point Tree search algorithm for fast nearest neighbour search in multi-dimensional metric spaces.

 2 32 2.1.0 BSD-2-Clause
ahnlich Listed

Suite of tools containing an in-memory vector datastore and AI proxy

 0 249 0.4.5 MIT
memvdb Listed Dormant

A Rust in-memory vector database

 2 2 0.1.1 MIT
next-plaid Listed

CPU-based PLAID implementation for multi-vector search using ndarray

Python bindings

 1 610 1.8.5 CUDA Apache-2.0
hyperspace-db Listed

[H] HyperspaceDB is a high-performance, vector database. It features 1-bit quantization, async replication, and native support for hierarchical datasets (Lorentz, Poincaré ball & Hybrid models).

 3 163 4.2.0 MIT
ngt-rs Listed Dormant

Rust wrappers for NGT nearest neighbor search.

 0 39 0.8.0 Apache-2.0
yantrikdb-server App Listed

YantrikDB database server — multi-tenant cognitive memory with wire protocol, HTTP gateway, replication, auto-failover, and at-rest encryption

 Not applicable 179 0.20.0 Apache-2.0
nodedb Listed

Local-first, real-time, edge-to-cloud hybrid database for multi-modal workloads

and 1 related project

 3 246 0.6.2 BUSL-1.1
granne Listed Dormant

Graph-based Retrieval of Approximate Nearest Neighbors

 0 319 0.5.2 MIT
lsh-rs Listed Dormant

LSH: Approximate Nearest Neighbor Search with Locality Sensitive Hashing.

 0 124 0.4.0 MIT
edgevec Listed

High-performance embedded vector database for Browser, Node, and Edge

 1 100 0.9.0 Apache-2.0 OR MIT
seismic Listed

Seismic is designed for effective and efficient KNN retrieval over learned sparse embeddings.

Python bindings

 0 141 0.2.1 MIT
corenn Listed

Billion-scale vector database

 0 401 0.3.1 Apache-2.0
oasysdb App Listed Dormant

In-memory vector store with efficient read and write performance for semantic caching and retrieval system. Redis for Semantic Caching.

 Not applicable 376 Not measured Not measured Apache-2.0
satoriDB App Listed

High performance embedded vector database

 Not applicable 245 Not measured Not measured MIT
victor Listed Dormant

A browser-optimized vector database

 0 262 0.2.0 Not measured
hwt App Listed Dormant

Hamming Weight Tree from the paper "Online Nearest Neighbor Search in Hamming Space"

 Not measured Not applicable 7 Not measured Not measured Not measured MIT
tinyvector App Listed Dormant

A tiny embedding database in pure Rust.

 Not measured Not applicable 440 Not measured Not measured Not measured MIT
voy App Listed Dormant

🕸️🦀 A WASM vector similarity search written in Rust

 Not measured Not applicable 1,076 Not measured Not measured Not measured Apache-2.0
Archived 2 projects
instant-distance Archived

Fast minimal implementation of HNSW maps for approximate nearest neighbors searches

 36 343 0.6.1 Apache-2.0 OR MIT
chromadb-rs Archived

A Rust client library for the ChromaDB vector database.

 7 46 2.3.0 MIT