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LLM application frameworks · Apache 2.0 (open source) · 26,897 stars

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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.

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Project	License	Stars	Per week	Latest release
DifyBuild Agentic workflows, RAG pipelines, with rich AI model and tool support on one collaborative workspace.LangGeniusDify Open Source License (Apache 2.0 with multi-tenant SaaS and logo restrictions)	Dify Open Source License (Apache 2.0 with multi-tenant SaaS and logo restrictions)changed Jul 2023	161k	+524	1.17.1Sep 10, 2026
Open WebUIUser-friendly AI Interface (Supports Ollama, OpenAI API,...).Open WebUIOpen WebUI License (BSD-3-Clause plus branding-preservation clause)	Open WebUI License (BSD-3-Clause plus branding-preservation clause)changed Apr 2025	158k	+753	-
langflowLangflow is a powerful tool for building and deploying AI-powered agents and workflows.MIT	MIT	156k	+171	-
LangChainThe agent engineering platform.LangChainMIT	MIT	149k	+308	langchain-core==1.6.5Sep 24, 2026
ragflowRAGFlow is an agent-native database: a Retrieval-Augmented Generation (RAG) engine that grew into context infrastructure.Apache 2.0	Apache 2.0	93.6k	+384	-
deer-flowAn open-source long-horizon SuperAgent harness that researches, codes, and creates.MIT	MIT	85.2k	+321	-
gpt_academicA framework for LLM applications by binary-husky, written in Python.GPL v3	GPL v3	71.6k	+36	-
mem0The Memory Layer for AI Agents - Drop-in memory infrastructure for AI agents and apps.Apache 2.0	Apache 2.0	68.3k	+383	-