The best RAG and vector search projects in 2026

Last updated

Sep 11, 2026

Projects considered

68

Commits reviewed

0 of 68

Retrieval-augmented generation stacks: chunking, embeddings, vector stores, rerankers and the glue that connects them to a model.

Mostly written in Go, C++, Python, TypeScript and JavaScript.

1. 1

   milvus

   milvus-io/milvus

   Milvus is a high-performance, cloud-native vector database built for scalable vector ANN search

   Pushed today.Apache License 2.0GoDeveloper tools46.6k+78

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2. 2

   zvec

   alibaba/zvec

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

   Pushed yesterday.Apache License 2.0C++Developer tools16.2k+25

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3. 3

   open-webui

   open-webui/open-webui

   User-friendly AI Interface (Supports Ollama, OpenAI API, ...)

   Pushed today.OtherPythonApps157.6k+727

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4. 4

   langchain

   langchain-ai/langchain

   The agent engineering platform.

   Pushed yesterday.MIT LicensePythonAgents148.9k+391

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5. 5

   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.

   Pushed yesterday.Apache License 2.0PythonDeveloper tools141.6k+5.0k

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6. 6

   supabase

   supabase/supabase

   The Postgres development platform. Supabase gives you a dedicated Postgres database to build your web, mobile, and AI applications.

   Pushed today.Apache License 2.0TypeScriptDeveloper tools114.5k+360

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7. 7

   claude-mem

   thedotmack/claude-mem

   Persistent Context Across Sessions for Every Agent – Captures everything your agent does during sessions, compresses it with AI, and injects relevant context back into future sessions. Works with Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode + More

   Pushed yesterday.Apache License 2.0TypeScriptPlugins111.4k+7.8k

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8. 8

   ragflow

   infiniflow/ragflow

   RAGFlow is a leading open-source Retrieval-Augmented Generation (RAG) engine that fuses cutting-edge RAG with Agent capabilities to create a superior context layer for LLMs

   Pushed yesterday.Apache License 2.0GoDeveloper tools93.4k+472

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9. 9

   deer-flow

   bytedance/deer-flow

   An open-source long-horizon SuperAgent harness that researches, codes, and creates. With the help of sandboxes, memories, tools, skill, subagents and message gateway, it handles different levels of tasks that could take minutes to hours.

   Pushed yesterday.MIT LicensePythonDeveloper tools84.9k+454

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10. 10

    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.

    Pushed yesterday.Apache License 2.0PythonDeveloper tools78.7k+724

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11. 11

    mem0

    mem0ai/mem0

    The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps. Context that persists. Built for production.

    Pushed 4 days ago.Apache License 2.0PythonAgents68.3k+425

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12. 12

    anything-llm

    Mintplex-Labs/anything-llm

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

    Pushed yesterday.MIT LicenseJavaScriptAgents67.9k+266

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13. 13

    litellm

    BerriAI/litellm

    The fastest, litest AI Gateway. Rust core with Python SDK. Call 100+ LLM APIs in OpenAI (or native) format with cost tracking, guardrails, load balancing, and logging [Bedrock, Azure, OpenAI, Anthropic, OpenAI, VertexAI, vLLM, Nvidia NIM]

    Pushed today.OtherPythonDeveloper tools62.6k+482

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14. 14

    meilisearch

    meilisearch/meilisearch

    A lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.

    Pushed yesterday.OtherRustDeveloper tools59.8k+78

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15. 15

    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.

    Pushed yesterday.MIT LicenseJupyter NotebookApps58.7k

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16. 16

    llama_index

    run-llama/llama_index

    LlamaIndex is the document processing platform for AI

    Pushed 8 days ago.MIT LicensePythonApps52.8k+110

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17. 17

    JeecgBoot

    jeecgboot/JeecgBoot

    【低代码v2.0，一句话即可生成整个系统】企业级AI低代码平台，一键生成前后端代码甚至整个系统。 AI Skills 一句话画流程、设计表单、生成报表、大屏。内置 AI应用平台涵盖：AI聊天、知识库、流程编排、MCP插件等，兼容主流大模型。引领AI低代码「Skills 生成 → 在线配置 → 代码生成 → 手工合并->AI修改」开发模式，解决 Java 项目 90% 重复工作，提高效率又不失灵活。

    Pushed yesterday.Apache License 2.0JavaDeveloper tools48.4k+77

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18. 18

    langgraph

    langchain-ai/langgraph

    Build resilient agents.

    Pushed yesterday.MIT LicensePythonAgents44.4k+411

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19. 19

    LightRAG

    HKUDS/LightRAG

    [EMNLP2025] LightRAG: Simple and Fast Retrieval-Augmented Generation

    Pushed 5 days ago.MIT LicensePythonApps40.5k+146

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20. 20

    PageIndex

    VectifyAI/PageIndex

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

    Pushed yesterday.MIT LicensePythonApps40.0k+123

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21. 21

    quivr

    The-Vibe-Company/quivr

    Opiniated RAG for integrating GenAI in your apps 🧠 Focus on your product rather than the RAG. Easy integration in existing products with customisation! Any LLM: GPT4, Groq, Llama. Any Vectorstore: PGVector, Faiss. Any Files. Anyway you want.

    Pushed yesterday.OtherPythonUI / Frontend39.6k+18

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22. 22

    Langchain-Chatchat

    chatchat-space/Langchain-ChatchatSlowing

    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

    Last push 12 months ago.Apache License 2.0PythonApps38.7k+4

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23. 23

    Vane

    ItzCrazyKns/Vane

    Vane is an AI-powered answering engine.

    Pushed 2 months ago.MIT LicenseTypeScriptDeveloper tools38.0k+224

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24. 24

    khoj

    khoj-ai/khojSlowing

    Your AI second brain. Self-hostable. Get answers from the web or your docs. Build custom agents, schedule automations, do deep research. Turn any online or local LLM into your personal, autonomous AI (gpt, claude, gemini, llama, qwen, mistral). Get started - free.

    Last push 3 months ago.GNU Affero General Public License v3.0PythonAgents38.0k+124

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25. 25

    langfuse

    langfuse/langfuse

    🪢 Open source agent evals & observability: Trace, evaluate, and improve LLM applications with one open platform.

    Pushed today.OtherTypeScriptAgents36.9k+365

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26. 26

    book-to-skill

    virgiliojr94/book-to-skill

    Turn any technical book PDF into a Claude Code skill — ready to study, reference, and use while you work.

    Pushed 7 days ago.MIT LicensePythonSkills36.8k+594

    Save
27. 27

    graphrag

    microsoft/graphrag

    A modular graph-based Retrieval-Augmented Generation (RAG) system

    Pushed 2 days ago.MIT LicensePythonApps36.5k+81

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28. 28

    WeKnora

    Tencent/WeKnora

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

    Pushed yesterday.OtherGoPlugins36.4k+740

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29. 29

    onyx

    onyx-dot-app/onyx

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

    Pushed yesterday.OtherPythonApps33.2k+155

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30. 30

    cognee

    topoteretes/cognee

    Cognee is the open-source AI memory platform for agents. Give your AI agents persistent long-term memory across sessions with a self-hosted knowledge graph engine.

    Pushed yesterday.Apache License 2.0PythonDeveloper tools33.0k+222

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31. 31

    Scrapegraph-ai

    ScrapeGraphAI/Scrapegraph-ai

    Python scraper based on AI

    Pushed 29 days ago.MIT LicensePythonDeveloper tools32.5k+192

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32. 32

    TencentDB-Agent-Memory

    TencentCloud/TencentDB-Agent-Memory

    TencentDB Agent Memory is a team-level memory hub for AI Agents — turning conversations, docs, and code into four reusable memory assets (Chat Memory, Skill, LLM-Wiki, Code-Graph) that are governed, shared, and equipped across agents and frameworks.

    Pushed today.OtherTypeScriptPlugins30.4k+369

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33. 33

    FastGPT

    labring/FastGPT

    FastGPT is a knowledge-based platform built on the LLMs, offers a comprehensive suite of out-of-the-box capabilities such as data processing, RAG retrieval, and visual AI workflow orchestration, letting you easily develop and deploy complex question-answering systems without the need for extensive setup or configuration.

    Pushed yesterday.OtherTypeScriptApps30.0k+65

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34. 34

    sim

    simstudioai/sim

    Sim is the collaborative workspace to build, deploy, and monitor AI agents and workflows. Used by 100,000+ builders.

    Pushed yesterday.Apache License 2.0TypeScriptApps30.0k+55

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35. 35

    haystack

    deepset-ai/haystack

    Open-source AI orchestration framework for building context-engineered, production-ready LLM applications. Design modular pipelines and agent workflows with explicit control over retrieval, routing, memory, and generation. Built for scalable agents, RAG, multimodal applications, semantic search, and conversational systems.

    Pushed today.Apache License 2.0PythonDeveloper tools26.9k+65

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36. 36

    GenAI_Agents

    NirDiamant/GenAI_Agents

    50+ tutorials and implementations for Generative AI Agent techniques, from basic conversational bots to complex multi-agent systems.

    Pushed 2 days ago.OtherJupyter NotebookAgents24.8k+106

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37. 37

    MaxKB

    1Panel-dev/MaxKB

    🔥 MaxKB is an open-source platform for building enterprise-grade agents. 强大易用的开源企业级智能体平台。

    Pushed yesterday.GNU General Public License v3.0PythonPlugins23.1k+56

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38. 38

    agents-towards-production

    NirDiamant/agents-towards-production

    End-to-end, code-first tutorials for building production-grade GenAI agents. From prototype to enterprise deployment.

    Pushed 2 days ago.OtherJupyter NotebookAgents21.8k+42

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39. 39

    coze-studio

    coze-dev/coze-studioSlowing

    An AI agent development platform with all-in-one visual tools, simplifying agent creation, debugging, and deployment like never before. Coze your way to AI Agent creation.

    Last push 3 months ago.Apache License 2.0TypeScriptPlugins21.8k+37

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40. 40

    WrenAI

    Canner/WrenAI

    GenBI (Generative BI) for AI agents, an open-source, governed text-to-SQL through an open context layer that turns natural-language questions into trusted dashboards, charts, and SQL across 20+ data sources, such as BigQuery, Snowflake, PostgreSQL, ClickHouse, Amazon Redshift, Databricks and more.

    Pushed yesterday.OtherPythonAgents18.1k+70

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Showing the top 40 of 68. Search the full catalog.