11 companies tracked in this category. Names and one-line descriptions are free to browse — pricing model, funding, founding year, headquarters, and cited sources are in the full dataset.
| Company | Description |
|---|---|
| Composio | Developer platform and API providing pre-built, authenticated tool/integration connectors (200+ apps) that let AI agents reliably take actions across third-party software. |
| CrewAI | Open-source Python framework (plus a commercial cloud platform) for orchestrating role-based, autonomous multi-agent "crews" that collaborate to automate complex business workflows. |
| Flowise | Open-source, drag-and-drop low-code platform for visually building LLM workflows and AI agents, acquired by Workday in 2025. |
| Haystack (deepset) | Open-source LLM orchestration framework, Haystack, for building production-grade RAG pipelines and AI agents, developed and commercialized by the Berlin-based startup deepset. |
| LangChain (LangChain Inc. / LangSmith / LangGraph) | Provides the open-source LangChain and LangGraph frameworks for building and orchestrating LLM-powered applications and multi-step AI agents, plus the LangSmith platform for tracing, evaluating, and monitoring them in production. |
| LlamaIndex | Open-source data framework (with the managed LlamaCloud/LlamaParse services) for connecting large language models to enterprise data sources to build retrieval-augmented generation pipelines and knowledge agents. |
| Microsoft AutoGen / AG2 | Open-source multi-agent programming framework originally created by Microsoft Research for building conversational, tool-using AI agent systems; now continued under open governance as AG2. |
| n8n | Open-source, fair-code workflow automation platform with AI/LangChain-based agent nodes that lets users visually build and orchestrate multi-step automations and AI agents. |
| Rasa | Open-source conversational AI framework (Rasa Open Source/Rasa Pro) for building enterprise-grade chatbots and AI assistants that combine LLMs with traditional NLU-based dialogue management. |
| Relevance AI | No-code/low-code platform for building and deploying teams of AI agents (an "AI workforce") that connect to business tools and data to automate multi-step tasks. |
| Vellum AI | Enterprise AI development platform providing tools to design, test, evaluate, and deploy production LLM applications and agentic workflows. |