How many Agent Frameworks tools are listed?

22 total. 22 have a free option and 3 are open source.

What's a typical price for Agent Frameworks tools?

Paid tiers average around $81/month across 7 tools with published pricing. Several tools only list contact-sales pricing and aren't counted here.

Agent Development Frameworks

All 22 Agent Frameworks tools on AgentsIndex. Filter, sort, and compare.

22 listed22 freeavg $81/month

Reviewed by Mathijs Bronsdijk · Updated Apr 18, 2026

The Agent Frameworks catalog on AgentsIndex lists 22 tools built for this job. Most are built for developers, engineers, small teams. 22 have a free option, 3 are open source. It's one of the more active categories with 3 tools shipping releases in the last 90 days.

LiveKit Agents

Build and scale realtime voice AI agents with Python or Node.js

Agent Frameworks

LiveKit Agents is an open-source agent platform for building and deploying realtime voice AI agents on WebRTC with Python and Node.js SDKs.

CAMEL-AI

Open-source framework for building scalable multi-agent systems

Agent Frameworks

CAMEL-AI is an open-source framework for developers building multi-agent systems, with tools for data generation, world simulation, and task automation.

MetaGPT

Open-source multi-agent framework for turning prompts into code and specs

Agent Frameworks

MetaGPT is an open-source agent framework for developers to generate code, docs, and designs from natural language prompts.

AutoGen

Open-source framework for multi-agent workflows and conversational agents

Agent Frameworks

AutoGen is Microsoft's open-source agent framework for developers building scalable multi-agent systems and event-driven workflows.

Trigger.dev

Build and deploy fully-managed AI agents and workflows in TypeScript

Agent Frameworks

Trigger.dev is an open-source AI agent and workflow platform for developers. Build durable background jobs with concurrency control and real-time monitoring.

Letta

Stateful memory platform for building persistent LLM agents

Agent Frameworks

Letta is an agent framework for developers to add memory and state to LLMs, helping build persistent, self-improving agents.

Swarms

Multi-agent AI orchestration framework for enterprise automation at scale

Agent Frameworks

Swarms is an open-source multi-agent AI framework that coordinates specialized AI agents in parallel to automate complex workflows across finance, healthcare, and security.

Agency Swarm

Build and orchestrate teams of AI agents with customizable roles.

Agent Frameworks

Agency Swarm is an open-source framework for developers building collaborative AI agent systems, with flexible role customization on OpenAI's Agents SDK.

Vercel AI SDK

Open-source TypeScript SDK for building AI apps and agents

Agent Frameworks

Vercel AI SDK is a free, open-source TypeScript library for building AI-powered apps with multi-model support, streaming, and built-in fallbacks.

smolagents

smolagents: Hugging Face's lightweight Python library for building AI agents

Agent Frameworks

smolagents is a free, open-source library from Hugging Face for building LLM-powered AI agents in Python with minimal code and flexible model support.

Agno

Open-source Python framework for building and running multi-agent systems

Agent Frameworks

Agno is an open-source Python framework and runtime for building, deploying, and managing scalable multi-agent systems.

PydanticAI

PydanticAI: Python agent framework for production LLM applications

Agent Frameworks

PydanticAI is an open-source Python framework for building type-safe, production-grade AI agents with support for multiple LLM providers.

Haystack

Open-source framework for AI agents, RAG, semantic search, and LLM apps

Agent Frameworks

Haystack is an open-source framework by deepset for building AI agents, RAG systems, semantic search, and vendor-neutral LLM apps.

LlamaIndex

Open-source framework for building AI apps on your own data

Agent Frameworks

LlamaIndex is an open-source framework for RAG, helping teams connect documents, databases, and APIs to AI apps with searchable context.

Google ADK

Build AI applications faster with Google's official dev toolkit

Agent Frameworks

Google ADK gives developers a structured toolkit to build, test, and deploy AI applications. Explore features, pricing, and top alternatives.

Semantic Kernel

Microsoft's open-source SDK for building AI agents in C#, Python, or Java

Agent Frameworks

Semantic Kernel is a free, open-source SDK from Microsoft for building AI agents and integrating LLMs into C#, Python, and Java applications.

Mastra

Open-source TypeScript framework for building and observing AI agents

Agent Frameworks

Mastra is an open-source TypeScript framework for building, deploying, and observing AI agents with tracing, metrics, and model access.

OpenAI Agents SDK

Build multi-agent apps with tools, handoffs, and tracing

Agent Frameworks

OpenAI Agents SDK is a lightweight agent framework for developers building single- or multi-agent apps in Python, TypeScript, or Go.

CrewAI

Open-source framework for multi-agent AI teams and workflow automation

Agent Frameworks

Build AI agent teams with CrewAI using autonomous crews and deterministic flows for complex business workflows.

Claude Agent SDK

Build autonomous Claude agents with tools for files, commands, and web search

Agent Frameworks

Claude Agent SDK helps developers build autonomous agents in Python and TypeScript with file access, command execution, and web search.

LangGraph

Build resilient AI agents as graphs with memory and human-in-the-loop control

Agent Frameworks

Open-source framework for AI agents with graph-based workflows, memory, retries, tool calls, branching, and human approval.

AutoGPT

Open-source AI agent that plans, acts, and iterates toward your goals

Agent Frameworks

AutoGPT is an open-source AI agent that breaks goals into tasks, plans actions, and works with minimal human input.

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How many Agent Frameworks tools are listed?

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