Runtime & Orchestration

Workflow automation platform with 400+ integrations and agent nodes.

Open-source LLM app platform with built-in RAG, workflows and agents.

Visual canvas for building LangChain-based agents, exportable as an API or MCP server.

Microsoft's pioneering multi-agent conversation framework, now in maintenance mode.

Role-based multi-agent orchestration framework in Python.

Visual agent builder acquired by Workday; the repository has been archived.

Data framework for LLM apps with agent workflows and 300+ integrations.

Graph-based agent runtime by the LangChain team with native durable execution and human-in-the-loop.

Agent framework with an AgentOS runtime and control plane, formerly Phidata.

Hugging Face's minimal agent library built around CodeAgent.

Microsoft's enterprise SDK for LLM orchestration, now in maintenance mode.

deepset's production LLM framework; v3 adds agent loops and tool execution.

Open-source Agent Development Kit that deploys natively to Vertex AI Agent Engine.

The unified successor that merges AutoGen and Semantic Kernel; reached 1.0 GA in April 2026.

Anthropic's SDK for building agents on the Claude Code harness.

Filesystem-first agent framework by Vercel: an agent/ directory is the agent.

TypeScript agent framework with workflows, RAG and eval primitives.

OpenAI's production agent framework, the successor to Swarm.

Type-safe Python agent framework that validates LLM output with Pydantic.