The best milvus alternatives

WeKnora

Tencent/WeKnora

Open-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.

Choose WeKnora if…

• you want something your agent can install directly rather than a library to wire up yourself
• you specifically need agent or agentic

Shares golang, llm, rag, vector-search with milvus.

zvec

alibaba/zvec

A lightweight, lightning-fast, in-process vector database

Choose zvec if…

• you would rather work in C++ than Go
• you want something your agent can install directly rather than a library to wire up yourself
• you prefer a smaller, narrower project to a large one
• you specifically need agent-skills or db

Shares faiss, hnsw, rag, vector-database with milvus.

AdalFlow

SylphAI-Inc/AdalFlow

AdalFlow: The library to build & auto-optimize LLM applications.

Choose AdalFlow if…

• you would rather work in Python than Go
• MIT License suits your use better than Apache License 2.0
• you prefer a smaller, narrower project to a large one
• you specifically need agent or ai

Shares faiss, llm, rag with milvus.

anything-llm

Mintplex-Labs/anything-llm

Stop renting your intelligence. Own it with AnythingLLM. Everything you need for a powerful local-first agent experience

Choose anything-llm if…

• you would rather work in JavaScript than Go
• MIT License suits your use better than Apache License 2.0
• you specifically need agent-computer or agent-harness

Shares llm, rag, vector-database with milvus.

llm-app

pathwaycom/llm-app

Ready-to-run cloud templates for RAG, AI pipelines, and enterprise search with live data. 🐳Docker-friendly.⚡Always in sync with Sharepoint, Google Drive, S3, Kafka, PostgreSQL, real-time data APIs, and more.

Choose llm-app if…

• you would rather work in Jupyter Notebook than Go
• MIT License suits your use better than Apache License 2.0
• you specifically need chatbot or hugging-face

Shares llm, rag, vector-database with milvus.

llama_index

run-llama/llama_index

LlamaIndex is the document processing platform for AI

Choose llama_index if…

• you would rather work in Python than Go
• MIT License suits your use better than Apache License 2.0
• you specifically need agents or application

Shares llm, rag, vector-database with milvus.

PageIndex

VectifyAI/PageIndex

📑 PageIndex: Document Index for Vectorless, Reasoning-based RAG

Choose PageIndex if…

• you would rather work in Python than Go
• MIT License suits your use better than Apache License 2.0
• you specifically need agentic-ai or agents

Shares llm, rag, vector-database with milvus.

Langchain-Chatchat

chatchat-space/Langchain-Chatchat

Langchain-Chatchat（原Langchain-ChatGLM）基于 Langchain 与 ChatGLM, Qwen 与 Llama 等语言模型的 RAG 与 Agent 应用 | Langchain-Chatchat (formerly langchain-ChatGLM), local knowledge based LLM (like ChatGLM, Qwen and Llama) RAG and Agent app with langchain

Choose Langchain-Chatchat if…

• you would rather work in Python than Go
• you specifically need chatbot or chatchat

Shares faiss, llm, rag with milvus.

onyx

onyx-dot-app/onyx

Open Source AI Platform - AI Chat with advanced features that works with every LLM

Choose onyx if…

• you would rather work in Python than Go
• you specifically need ai or ai-chat

Shares llm, rag, vector-search with milvus.

postgresml

postgresml/postgresml

Postgres with GPUs for ML/AI apps.

Choose postgresml if…

• you would rather work in Rust than Go
• MIT License suits your use better than Apache License 2.0
• you prefer a smaller, narrower project to a large one
• you specifically need ai or ann

Shares llm, rag, vector-database with milvus.

graphify

Graphify-Labs/graphify

Turn any codebase, with its docs, SQL schemas, configs, and PDFs, into a queryable knowledge graph. A /graphify skill for Claude Code, Cursor, Codex, and Gemini CLI: local deterministic AST parsing, every edge explained, no vector store.

Choose graphify if…

• you would rather work in Python than Go
• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (141.6k)
• you specifically need ai-agents or antigravity

Shares llm, rag with milvus.

headroom

headroomlabs-ai/headroom

Compress tool outputs, logs, files, and RAG chunks before they reach the LLM. 20% fewer tokens for coding agents, 60-95% fewer tokens for JSON, same answers. Library, proxy, MCP server.

Choose headroom if…

• you would rather work in Python than Go
• you want something your agent can install directly rather than a library to wire up yourself
• you want the more widely starred option (78.7k)
• you specifically need agent or ai

Shares llm, rag with milvus.