Best AI Agent Tools

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Freemium

AI-native code editor

An AI IDE for developers with codebase Q&A, automatic edits, multi-file changes and agentic coding workflows.

Bolt.new

Freemium

AI full-stack development in the browser

StackBlitz AI coding environment for generating, running and deploying apps in the browser.

Claude Code

Paid

Claude coding agent in the terminal

Anthropic's command-line coding assistant for reading codebases, editing files and performing development tasks.

Dify

Open source

Open-source LLM app platform

Visual platform for building chatbots, workflows, RAG and agent apps.

Lovable

Freemium

AI full-stack app builder

Conversational web app builder for MVPs, prototypes and non-engineers.

n8n

Open source

Open-source automation workflow platform

Node-based automation platform for connecting APIs, databases and AI services.

v0

Freemium

Vercel AI UI generator

Generates React/Next.js UI from prompts for quick prototypes and frontend components.

Windsurf

Freemium

Agentic IDE by Codeium

AI coding IDE focused on Cascade workflows, codebase understanding and automatic edits.

AutoGen

Open source

Microsoft multi-agent framework

Open-source framework for multi-agent conversations and task automation.

OpenAI Codex

Paid

OpenAI coding agent

OpenAI's coding and software engineering agent capabilities for implementation, fixes and review.

Copy.ai

Freemium

Sales and marketing copy AI

Helps teams generate sales emails, marketing content and GTM workflows.

Coze

Freemium

Low-code AI bot and agent platform

A low-code AI bot and agent platform with plugins, workflows, knowledge bases and multi-channel publishing.

CrewAI

Open source

Multi-agent collaboration framework

Organizes multiple AI agents with roles and tasks for complex workflows.

LangChain

Open source

LLM application framework

Popular framework for RAG, agents, tool calling and LLM workflows.

LlamaIndex

Open source

Data-to-LLM RAG framework

Connects documents, databases and APIs to build retrieval-augmented generation apps.

Manus

Freemium

General task AI agent

General agent for complex tasks such as research, planning and automation.

Midscene.js

Open source

AI-powered browser automation

Natural-language browser UI automation and end-to-end testing.

Poe

Freemium

Multi-model AI chat hub

Quora's multi-model chat platform for using many models and bots from one place.

Replit

Freemium

Cloud IDE and AI agent

Online development environment with AI coding, deployment and collaboration features.

Zapier AI

Freemium

AI inside automation workflows

Adds AI into Zapier automations connecting SaaS apps, forms, email and internal systems.