Open Source #rag Projects

Sim is an open-source workspace to build, deploy, and orchestrate AI agents and agentic workflows. Visually connect LLMs, tools, and data sources without giving up control.

Open-source AI chat and agent platform with multi-provider support, RAG, plugins, and an agent marketplace — self-hostable ChatGPT alternative.

Onyx is an open-source AI chat and enterprise search platform with RAG that works with every LLM. Bring your own model, connect your tools, and unify all your team's knowledge.

Visually build and deploy AI agents and workflows in Python, with built-in API and MCP servers. MIT-licensed and backed by DataStax.

Open-source platform for fine-tuning and running LLMs locally — 2x faster training with 70% less VRAM. Supports LoRA, QLoRA, DPO, GRPO.

A self-hosted personal knowledge base that turns markdown notes into an AI-augmented knowledge graph with semantic search and wiki synthesis.

Open LLM app platform with visual workflows, RAG pipeline, agents and model management. Deploy self-hosted, in your VPC, or on Dify Cloud.

Fast, typo-tolerant open-source search engine with vector, hybrid and semantic search — a simpler, cheaper alternative to Algolia.

Self-hosted RAG chatbot platform that answers visitor questions from your website and PDFs, with a two-line embeddable widget and citations.