Pick your AI agent harness first. Then plug in the rest.
A harness is the “operating system” your AI agent runs in. Pick one that fits your business, then add agents, tools, MCP connectors and skills. 20 harnesses, 37 listings, every one sourced.
Top harnesses for small businesses
n8n
Visual workflow automation with native AI agent nodes.
OpenClaw
Open-source personal AI assistant that runs on your own machine.
Lindy
Hosted 'AI employees' for inbox, calendar, phone and sales tasks.
Zapier Agents
AI teammates on top of the thousands of apps Zapier connects.
Make AI Agents
Visual AI agents across 3,000+ apps, with a step-by-step reasoning panel.
Marblism
A ready-made team of AI employees for small businesses.
Voiceflow
Build chat and voice agents for support and sales.
Botpress
AI agent platform for customer support chat.
Activepieces
Open-source automation with AI agents and ~400 MCP servers.
CrewAI
Python framework for teams of role-playing AI agents.
Dify
Open-source platform for agentic workflows and RAG apps.
Flowise
Build AI agents visually, open source.
goose
Open-source, extensible agent that runs on your machine.
Gumloop
Build AI agents and automations for everyday work.
Langflow
Low-code builder for agents and RAG, open source.
LangGraph
Low-level orchestration framework for reliable agents.
Microsoft Copilot Studio
Create AI agents inside the Microsoft 365 world.
Pipedream
The integration layer for AI agents.
Relevance AI
Build teams of specialist AI agents without code.
s3a-harness
Open-source MCP research-agent harness with human approval gates.
What plugs into them
Agent Skills (Anthropic)
Public repo of reusable Agent Skills: docs, spreadsheets, PDFs, brand guides.
AnythingLLM
On-device, private AI workspace for your documents.
Bland
Voice AI platform for phone agents.
Chatbase
Customer-facing AI agent for support and sales.
Fin (Intercom)
AI customer agent billed per resolution.
HubSpot MCP Server
Give agents access to your HubSpot CRM records.
The Tuesday Rack
Every Tuesday morning: one harness up close, 5 new tools or connectors, and one real small business setup. Free.