Top 10 Vespa Alternatives 2026

What is LanceDB?

LanceDB is a vector database built on the Lance columnar format, designed to run embedded in an application or over object storage rather than as a separate cluster. It stores vectors alongside the source data — text, images, video — so retrieval returns the record rather than an ID to look up ...

What is pgvector?

pgvector adds vector storage and similarity search to PostgreSQL as an extension, so embeddings live in the same database as the relational data they relate to. That removes the operational burden of running a second datastore and lets a single SQL query filter on business columns and rank by ...

What is Meilisearch?

Meilisearch is an open-source search engine focused on developer experience and instant results, with typo tolerance, faceting and, more recently, hybrid search that blends keyword relevance with vector similarity. It is designed to be integrated quickly and tuned through simple ranking rules ...

What is Typesense?

Typesense is an open-source search engine positioned as a simpler alternative to Elasticsearch, with typo tolerance and fast faceted search out of the box, and support for vector and hybrid search alongside keyword matching. It is designed to be operable without a dedicated search team — ...

What is Marqo?

Marqo handles embedding generation and vector search in one system, so documents and queries are vectorised by the engine rather than by a separate pipeline the team maintains. It supports text and image search with multimodal models, and is positioned strongly around ecommerce product ...

What is turbopuffer?

turbopuffer is a search engine that stores indexes on object storage rather than attached disks, which changes the cost profile substantially for large but infrequently queried corpora — you pay storage rates for cold data instead of provisioned memory. It supports vector similarity and ...

What is Deep Lake?

Deep Lake from Activeloop stores vectors together with the underlying data — images, video, audio, text — in a format designed for machine learning workflows, supporting version control over datasets and streaming to training jobs. Its distinguishing idea is treating the vector index and the ...

What is ClickHouse?

ClickHouse is a columnar analytical database that also supports vector similarity search through distance functions and approximate nearest-neighbour indexes, letting teams run vector retrieval alongside large-scale analytical queries in one system. It is not a purpose-built vector database, ...

What is Azure AI Search?

Azure AI Search combines vector similarity, keyword search and a semantic reranking layer in one managed service, with built-in document cracking and chunking so files can be indexed without a separate ingestion pipeline. It integrates closely with Azure OpenAI for embedding generation and ...

What is Vertex AI Vector Search?

Vertex AI Vector Search is Google Cloud's managed nearest-neighbour service, derived from the ScaNN algorithm developed by Google Research and built for indexes running into billions of vectors with low query latency. It handles index building, sharding and serving, and integrates with Vertex ...