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Kowari

Kowari is a Rust vector database library for storing vectors locally and finding similar vectors. It offers brute-force, LSH and HNSW search, with in-memory or local file storage and SQLite for metadata and system information.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

Kowari — OpenViST project profile in RAG & Knowledge Systems.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use Kowari when a Rust application needs a local vector store and similarity-search component, and its documented index and storage options fit the design.

Who it is for

  • Rust developers building local vector retrieval into an application.
  • Teams creating semantic-search or nearest-neighbor components that need local storage.

Documented uses

  • Store vectors in memory or local storage.
  • Build an index and query for vectors similar to a supplied vector.
  • Choose between exact brute-force and approximate LSH or HNSW search.
Before you choose

Requirements & limits

The repository is public and lists the MIT license. Its setup instructions use Git and Cargo.

  • Search choices include exact brute-force and approximate LSH and HNSW methods.
  • Storage choices include memory, a custom .kwi binary format and SQLite for metadata and system information.
  • The documented example uses in-memory storage with HNSW; the README does not show an example using the file or SQLite options.
  • The documented component is written in Rust and is intended to run locally without cloud dependencies.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Set up the Kowari repository

Clone the repository and run its documented test command.

Before you start

  • Git
  • Rust and Cargo

Steps

  1. Clone https://github.com/neilthomass/kowari.git.

  2. Change into the kowari directory.

  3. Run cargo test.

Expected outcome

The repository is cloned and its documented test command has been run.

Guide limitations

  • The README does not specify Rust or Cargo version requirements.
  • Running the test command is not evidence that it succeeds in every environment.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
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Sources checked
17 October 2026
Original website title
neilthomass/kowari · Official homepage title · retained in its source language
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