ParadeDB adds full text search, vector retrieval, and aggregations to PostgreSQL.
The Best Weaviate Alternatives in 2026
Looking for something like Weaviate? Here are 16 alternatives, ranked by how closely they match it on purpose, features and platforms. Of these, 1 are free or have a free plan and 7 are open source.
An open-source vector database, Weaviate stores objects and vectors and supports vector search.
Top picks at a glance
Quick comparison
| # | Alternative | Pricing | Open source | Platforms |
|---|---|---|---|---|
| 1 | ParadeDB | — | Yes | — |
| 2 | pgvecto.rs | — | Yes | — |
| 3 | VectorDB | — | Yes | — |
| 4 | Vald | — | Yes | — |
| 5 | Qdrant | — | Not stated | Web |
| 6 | Vespa | — | Yes | — |
| 7 | Meilisearch | — | Not stated | — |
| 8 | ElasticSearch | Free trial | Not stated | Web |
| 9 | Neon | — | Yes | — |
| 10 | NocoDB | — | Not stated | — |
All Weaviate alternatives
PostgreSQL vector search can use pgvecto.rs, an extension described as scalable and low latency.
Vector search and storage are the focus of VectorDB, a Python vector database project.
Distributed vector search is provided by Vald, an engine designed to scale across deployments.
Qdrant
qdrant.techVector similarity search is provided by Qdrant, an open-source search engine written in Rust.
AI search and serving structured data are provided by Vespa, an open-source software platform.
Meilisearch
github.com/meilisearch/meilisearchSearch sites and applications with Meilisearch, an API-based search engine offering hybrid search.
Distributed search and analytics are provided by Elasticsearch, an open-source engine for indexed data.
Use Neon’s serverless Postgres database with autoscaling, database branching, and scale-to-zero support.
NocoDB
github.com/nocodb/nocodbBuild a self-hosted database application with NocoDB, an alternative to Airtable.
Zincsearch
github.com/zincsearch/zincsearchZincSearch offers lightweight search and indexing software written in Go.
Novu
github.com/novuhq/novuAdd communication infrastructure for products and agents with Novu, an open-source project.
Baserow
baserow.ioNo-code database and application building is available through Baserow, an open-source platform.
withoutBG
withoutbg.comwithoutBG offers background removal through a managed cloud API or a self-hosted open-weight model.
An open-source PostgreSQL administration and development interface for database objects and SQL work.
Shaped
shaped.aiShaped provides a vector database with a feedback loop for personalized search and recommendations.
Alternatives to similar tools
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