Best AI Tools to Build AI Agents (Free)

35 tools

Get the best AI tools in your inbox

Join 10,000+ builders and get weekly updates.

Weekly · AI tools

Grok Build (xAI)
Developer Tools
AI models for reasoning, voice, and image generation.
- AI Models
- Code Generation
- Workflow Automation
Free
Details
MaxKB
AI Agents
Open-source platform for building enterprise-grade agents.
Free
Details
MiMoCode
Developer Tools
Open-source AI coding agent with persistent memory and subagent orchestration.
- Code Agents
- Persistent Memory
- Subagent Orchestration
Free
Details
AA
AI Assistant for SMBs
Automation
Free playbook with 50+ AI automations for entrepreneurs to save 10-20 hours weekly.
- AI Automation
- Workflow Automation
Free
Details
DeerFlow
Developer Tools
Open-source long-horizon SuperAgent harness for research, coding, and creation.
- Multi-Agent Orchestration
- Workflow Automation
Free
Details
Google Agent Development Kit (ADK)
Developer Tools
Open-source Python toolkit for building, evaluating, and deploying AI agents with flexibility and control.
Free
Details
ZooWork
AI Agents
Build, deploy, and manage AI agents with business knowledge and workflows.
- AI Agents
Free
Details
Awesome Workflow Automation
Automation
Curated list of workflow automation tools and engines
Free
Details
Bernstein
AI Agents
Open-source AI agents governance and orchestration framework.
- AI Agents Governance
- Agent Frameworks
- Workflow Automation
Free
Details
Orkas
Developer Tools
Open-source AI desktop app for managing coding CLIs and sub-agents.
- Multi-Agent Orchestration
- Self-Evolution
Free
Details
CAMEL
AI Agents
Multi-agent framework for role-playing and cooperation.
- Multi-Agent Orchestration
- Agent Frameworks
Free
Details
Composio
LLM Tools
Enables building AI agents with toolkits, context management, and authentication.
- Tool Search
- Context Management
- Authentication Management
Free
Details
LiveKit Agents
AI Agents
A framework for building real-time voice AI agents
- Voice Agents
- Open-Source Voice
- Real-Time AI
Free
Details
PydanticAI
Coding Agents
A framework for building AI agents with type-safe, production-ready code.
- AI Agents
- Production Ready
- Realtime Voice
Free
Details
Trigger.dev
AI Agents
Build and deploy durable AI agents and workflows
Free
Details
dimos
AI Infrastructure
Agentic OS for controlling physical hardware via natural language and multi-agent systems.
Free
Details
nanobot
AI Agents
Ultra-lightweight personal AI agent framework in Python with WebUI, tools, memory, MCP, multi-agent workflows, automation, and chat apps.
- AI Agents
- Personal AI
- Agent Frameworks
Free
Details
Agent Swarm
AI Agents
Multi-agent orchestration for AI coding assistants with Docker isolation and integration.
- Multi-Agent Orchestration
- AI Coding
- Workflow Automation
Free
Details
Agno
Developer Tools
Build, run, and manage agent platforms.
- Multi-Agent Systems
- Workflow Automation
- Open Source
Free
Details
CopilotKit
Website & App Development
Frontend stack for building agent-powered apps with Generative UI
- Agent UI
- Generative UI
- AG-UI Protocol
Free
Details

Showing 1–20 of 35 tools