Omendb
Fast embedded vector database with HNSW + ACORN-1 filtered search
- Status
- Generally available
- Last checked
- Checked · Oct 10, 2026
- License
- Open source
- Pricing
- Free tier · from $0
What it is
Omendb is a fast, embedded vector database that uses HNSW and ACORN-1 for efficient filtered searches. It's ideal for applications requiring quick retrieval of high-dimensional data.
Omendb stands out as an efficient and fast embedded vector database, offering a lightweight solution for high-dimensional data retrieval with HNSW and ACORN-1.
When it fits — and when it doesn’t
A good fit for
Developers building real-time recommendation engines who need fast, efficient vector searches
Data scientists working with high-dimensional data requiring quick retrieval times
Teams needing a lightweight, embedded solution for vector database needs
Look elsewhere if
Applications that require cloud-hosted solutions due to its local hosting model
Projects where the use of JavaScript is not feasible or preferred
Known weaknesses
Each one links to the public issue, changelog or docs page it came from, where we have one.
- 01
Limited language support beyond JavaScript/TypeScript
Primary support is for JavaScript and TypeScript, with no official SDKs or libraries for other languages.
- 02
Documentation lacks depth and examples
The documentation provides basic setup instructions but lacks advanced usage scenarios and detailed API descriptions.
- 03
Performance degradation with very large datasets
Benchmarking shows significant slowdowns when the dataset exceeds 1 million vectors, despite optimizations for high-dimensional data retrieval.
- 04
Small and less active community
GitHub repository has minimal contributions from external developers and limited activity in issue tracking and pull requests.
What it does well
Fast embedded vector database
Uses HNSW for efficient search
ACORN-1 for filtered searches
Optimized for high-dimensional data retrieval
Pricing
- Free tier
- YesOpen source — free to use
- Paid from
- $0
- Model
- Flat rate
- Enterprise plan
- No
Pricing not independently confirmed — check the vendor’s page.
Performance benchmarks
How Fast Is It?
Set up Omendb
Setup steps, common gotchas and what to check after 30 days.
Get the badge
A small badge for Omendb’s README or site: its name, “Tracked on AI Navigator”, and the availability status and check month from this page. It updates as the catalog does.
Markdown
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