# Orchestration — Agent Architecture Layer

> Frameworks that coordinate agent logic, tool use, and decision flow

4 tools mapped to this layer of an AI agent architecture.

This is one layer of an [AI agent architecture](https://www.frameworkr.ai/blog/what-is-an-ai-agent-architecture.md), not a standalone product category. Design the blueprint first, then pick tools.

- [LangChain](https://www.frameworkr.ai/tools/langchain.md): The most widely-adopted framework for building LLM-powered applications and agents
- [LlamaIndex](https://www.frameworkr.ai/tools/llamaindex.md): The data framework for building LLM applications over custom knowledge sources
- [Graphify](https://www.frameworkr.ai/tools/graphify.md): Turn any codebase into a queryable knowledge graph.
- [Open Multi-Agent](https://www.frameworkr.ai/tools/open-multi-agent.md): TypeScript AI agent orchestration framework with dynamic workflows.


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_Frameworkr — https://www.frameworkr.ai_