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Best AI Tools to Build AI Agents (Free)

35 tools

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Weekly · AI tools

Tools

  • CrewAI

    AI Agents

    Framework for orchestrating role-playing, autonomous AI agents.

      Free

    • Omnigent

      AI Agents

      Open-source AI agent framework for orchestrating multiple models and agents with policy enforcement and real-time collaboration.

      • Multi-Agent Orchestration
      • Real-Time Collaboration

      Free

    • AI Dev Toolkit

      Developer Tools

      168 free AI dev resources including code generation and agent frameworks

      • Code Generation
      • AI Agents
      • Developer Tools

      Free

    • AnythingLLM

      LLM Tools

      Own your intelligence with a local-first agent experience.

      • Multi-Agent Workflow

      Free

    • Cline

      Developer Tools

      Autonomous coding agent for developers

        Free

      • Flowise

        AI Agents

        Build AI agents visually without coding.

        • No-Code Development
        • AI Agents
        • Workflow Automation

        Free

      • Paperclip

        AI Agents

        Open-source AI agent orchestration platform

        • Agent Orchestration
        • Governance Policies
        • Cost Control

        Free

      • AgentsMesh

        Developer Tools

        Run AI coding agents across machines from a console

          Free

        • LangGraph

          AI Agents

          Builds resilient agents for complex workflows.

            Free

          • Framework for building, orchestrating, and deploying AI agents and multi-agent workflows with Python and .NET support.

              Free

            • OpenHuman

              Developer Tools

              Open-source agent harness for personal AI with on-device processing

              • Agent Frameworks
              • Personal AI Agents
              • Open Source

              Free

            • Swarm

              AI Agents

              Educational framework for ergonomic, lightweight multi-agent orchestration

              • Multi-Agent Orchestration
              • Workflow Automation

              Free

            • A lightweight, powerful framework for multi-agent workflows

              • Multi-Agent Orchestration
              • Workflow Automation

              Free

            • Upsonic

              AI Agents

              Build autonomous AI agents in Python.

              • Agent Frameworks
              • Developer Tools

              Free

            Showing 21–35 of 35 tools