Open source. Open possibilities.

Lexos is an event-driven AI document processing engine combining a Go gateway, Python workers, Redis queues and self-hosted models for offline RAG, summarization and speech transcription.

LEANN is a lightweight vector database designed for personal RAG applications, reducing storage requirements by up to 97% through graph-based selective recomputation.

GitHub profile README for Sachin, a self-described applied AI architect and engineer. It points to selected open-source projects covering agents, retrieval (RAG), evaluation and reliability tooling, and lists skills, working style, engagement terms and contact details.

RAGFlow is an open-source Retrieval-Augmented Generation (RAG) engine that combines RAG with Agent capabilities to provide a high-fidelity context layer for Large Language Models.

LastChat is a feature-rich Android AI assistant forked from RikkaHub, offering multi-provider chat, RAG memory, multimodal input, built-in Python/JS engines, and local-first privacy.

Ready-to-run cloud templates for RAG, AI pipelines, and enterprise search with live data. Docker-friendly, synced with file systems, Google Drive, SharePoint, S3, Kafka, PostgreSQL, and real-time APIs. Includes built-in vector and hybrid search.

LightRAG is a lightweight graph-based retrieval-augmented generation framework from HKUDS, offering dual-level retrieval, knowledge-graph indexing, multimodal parsing, multiple storage backends and an API server with WebUI.

Local Deep Research is an open-source, fully-local AI research assistant that performs deep agentic research using multiple LLMs and 10+ search engines, with encrypted per-user databases and no telemetry.

An all-in-one AI framework for semantic search, LLM orchestration, and language model workflows.

Haystack is an open-source AI orchestration framework for building production-ready LLM applications, RAG systems, and autonomous agents in Python.

PageIndex is a vectorless, reasoning-based RAG engine that builds hierarchical tree indexes for long documents and lets an LLM reason through the tree to retrieve relevant sections, avoiding vector databases and chunking.

Langchain-Chatchat is an open-source offline RAG and Agent application based on Langchain and ChatGLM, Qwen, Llama etc., supporting local knowledge base Q&A, multiple model inference frameworks, WebUI and API.