20 Weaviate alternatives
Weaviate: An open-source AI-native database combining vector search, structured filtering, and built-in model integrations. 20 apps do similar work, most sharing Semantic Search, RAG and Open Source, ranked by how much they have in common with Weaviate.
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A fully managed vector database for semantic search and retrieval at billion-scale, with no infrastructure to run.
Also: Embeddings, RAG, Semantic Search, Vector Database
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An open-source vector search engine written in Rust — fast, memory-efficient, and self-hostable.
Also: Embeddings, Open Source, Semantic Search, Vector Database
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Evokoa
Turn a Postgres database into working memory for AI agents — relational rows, graph traversal and vector search fused into one ranked, token-budgeted context block.
Also: Open Source, RAG, Semantic Search, Vector Database
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The embedding database that starts as a Python import and grows into a distributed cloud service.
Also: Embeddings, Semantic Search, Vector Database
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A search engine built for AI — embeddings-based retrieval that finds pages by meaning, not keyword overlap.
Also: Embeddings, Semantic Search
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Glean Technologies, Inc.
Enterprise Work AI platform — permission-aware search across every company app, plus an assistant and agents that act on the results.
Also: RAG, Semantic Search
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Turn any website into clean markdown or structured JSON — crawling, JavaScript rendering, and extraction in one API.
Also: Open Source, RAG
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Vectify AI
A vectorless RAG engine that builds a tree index of long PDFs and lets an LLM reason its way to the right section, with page-level citations.
Also: Open Source, RAG
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An Apache-2.0 TypeScript framework for building AI agents — workflows, memory, RAG and evals — with a local studio and an agentic software factory on top.
Also: Open Source, RAG
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IBM (DataStax)
Open-source, MIT-licensed visual builder for AI agents, RAG apps and MCP servers, maintained by IBM's DataStax and extensible in Python.
Also: Open Source, RAG
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The framework and observability platform most teams use to build, debug, and ship LLM agents.
Also: Open Source, RAG
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LangGenius
An open-source platform for building production LLM applications — visual workflows, RAG, and agents in one place.
Also: Open Source, RAG
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A self-hosted, feature-rich chat interface that puts a polished front end on Ollama and any OpenAI-compatible API.
Also: Open Source, RAG
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AI for systematic literature review — search 125 million papers, extract data into tables, and screen at scale.
Also: Semantic Search
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Clipto, Inc.
Local-first AI memory for your media: index terabytes of video, audio and documents on your own machine and search them in plain language.
Also: Semantic Search
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AI notes workspace whose agent tracks tasks from your notes and meetings, with voice capture and an MCP connector for Claude and ChatGPT.
Also: Semantic Search
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Pieces (formerly Pieces for Developers) is a desktop app that records your work on-device and makes it searchable for you and your AI tools.
Also: Semantic Search
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An AI email client for Gmail that searches, drafts, organises, and schedules from a single prompt.
Also: Semantic Search
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Consensus responsibly uses AI to help you conduct research faster
Also: Semantic Search
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Olostep Technologies, Inc.
One API to search, scrape, crawl, map and monitor the web, returning clean structured text that AI agents and RAG pipelines can use directly.
Also: RAG