Best Alternatives to Llama Stack

Agent Protocol

Standardized communication protocol for AI agents enabling interoperability and coordination across different agent frameworks.

From Free

AgentStack

CLI tool for scaffolding, building, and deploying AI agent projects with best-practice templates, tool integrations, and framework support.

From Free

Agno

Full-stack platform for building, testing, and deploying AI agents with built-in memory, tools, and team orchestration capabilities.

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Atomic Agents

Lightweight Python framework for building modular AI agents with schema-driven I/O using Pydantic and Instructor.

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AutoGPT NextGen

Latest version of the pioneering autonomous AI agent with enhanced planning, tool usage, and memory capabilities.

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Bee Agent Framework

IBM's open-source TypeScript framework for building production AI agents with structured tool use, memory management, and observability.

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Composio

Composio is a tool integration platform that connects AI agents to 250+ external services including Gmail, Slack, Salesforce, GitHub, Jira, and dozens more. It handles authentication (OAuth, API keys), permission scoping, and provides ready-made function definitions that AI agents can call to take real-world actions. Rather than building custom API integrations for each service, developers use Composio's unified interface to give their agents the ability to send emails, create tickets, update CRMs, and perform other actions across the software stack.

From Free

ControlFlow

ControlFlow is an open-source Python framework from Prefect for building agentic AI workflows with a task-centric architecture. It lets developers define discrete, observable tasks and assign specialized AI agents to each one, combining them into flows that orchestrate complex multi-agent behaviors. Built on top of Prefect 3.0 for native observability, ControlFlow bridges the gap between AI capabilities and production-ready software with type-safe, validated outputs. Note: ControlFlow has been archived and its next-generation engine was merged into the Marvin agentic framework.

From Free

CrewAI

CrewAI is an open-source Python framework for orchestrating autonomous AI agents that collaborate as a team to accomplish complex tasks. You define agents with specific roles, goals, and tools, then organize them into crews with defined workflows. Agents can delegate work to each other, share context, and execute multi-step processes like market research, content creation, or data analysis. CrewAI supports sequential and parallel task execution, integrates with popular LLMs, and provides memory systems for agent learning. It's one of the most popular multi-agent frameworks with a large community and extensive documentation.

From Free

DSPy

DSPy is a framework from Stanford NLP that programmatically optimizes AI prompts and model pipelines rather than relying on manual prompt engineering. Instead of hand-crafting prompts, you define your AI pipeline as modular Python code with input/output signatures, and DSPy automatically finds the best prompts, few-shot examples, and fine-tuning configurations through optimization algorithms. It treats prompt engineering as a machine learning problem — define your metric, provide training examples, and let the optimizer find what works. DSPy supports major LLM providers and produces reproducible, testable AI systems.

From Free

Fast.io

Collaborative workspace platform for agentic AI teams. Provides infrastructure for building, deploying, and managing AI agent workflows.

Gemini Agents SDK

Google's official SDK for building AI agents with Gemini models and Google Cloud services.

From Contact

Google Agent Development Kit (ADK)

Google's open-source framework for building, evaluating, and deploying multi-agent AI systems with Gemini and other LLMs.

From Free

Goose AI

Open-source coding agent that provides Claude Code functionality for free with local and cloud model support.

From Free

Griptape

Python framework for building enterprise AI agents with predictable, structured workflows, built-in guardrails, and managed cloud deployment.

From Free

Guidance

Control framework for interleaving generation, logic, and tool calls. This ai agent builders provides comprehensive solutions for businesses looking to optimize their operations.

From Free

Haystack

Framework for RAG, pipelines, and agentic search applications. This ai agent builders provides comprehensive solutions for businesses looking to optimize their operations.

From Free

Instructor

Structured output library for reliable LLM schema extraction.

From Free

LangGraph

Graph-based stateful orchestration runtime for agent loops.

From Free

LiveKit Agents Framework

Open-source framework for building real-time voice and multimodal AI agents with speech-to-text, LLM processing, and text-to-speech pipelines.

From Free

LlamaIndex

Data framework for RAG pipelines, indexing, and agent retrieval.

From Free

LLMWare

Enterprise RAG and agent framework focused on small language models, local deployment, and industry-specific AI workflows.

From Free

Lyzr

AI agent builder platform focused on enterprise deployment with business user-friendly interfaces. Enables building and deploying agents without IT team dependency, accelerating time-to-value from months to weeks.

Mastra

TypeScript-native AI agent framework for building agents with tools, workflows, RAG, and memory — designed for the JavaScript/TypeScript ecosystem.

From Free

MindStudio

No-code AI agent builder platform for individuals, teams, and enterprises. Design, build, and deploy AI agents without coding requirements using their visual interface.

Mirascope

Pythonic LLM toolkit providing clean, type-safe abstractions for building agent interactions with calls, tools, and structured outputs.

From Free

Multimodal Agent Kit

Framework for building agents that process text, images, audio, and video with unified interfaces.

From Free

Outlines

Grammar-constrained generation for deterministic model outputs.

From Free

Phidata

Framework for building agentic apps with memory, tools, and vector DBs.

From Free

Pydantic AI

Production-grade Python agent framework that brings FastAPI-level developer experience to AI agent development. Built by the Pydantic team, it provides type-safe agent creation with automatic validation, structured outputs, and seamless integration with Python's ecosystem. Supports all major LLM providers through a unified interface while maintaining full type safety from development through deployment.

From Free

Rasa

Open-source framework for building production-grade conversational AI assistants with full control over data and deployment.

From Free

Rig

Rust-based LLM agent framework focused on performance, type safety, and composable AI pipelines for building production agents.

From Free

Semantic Kernel

SDK for building AI agents with planners, memory, and connectors. - Enhanced AI-powered platform providing advanced capabilities for modern development and business workflows. Features comprehensive tooling, integrations, and scalable architecture designed for professional teams and enterprise environments.

From Free

smolagents

Hugging Face's lightweight Python library for building tool-calling AI agents with minimal code and maximum transparency.

From Free

Strands Agents

AWS open-source SDK for building AI agents in Python with model-driven tool orchestration and built-in conversation memory.

From Free

Trade Ideas

AI-powered stock scanning and charting platform that provides real-time trade signals, automated analysis, and predictive analytics for traders.

TrendSpider

AI-driven technical analysis platform for automated chart pattern recognition, trend line drawing, and algorithmic trading strategies.

Voice Agent Studio

Platform for building and deploying conversational voice AI agents with natural speech capabilities.

From Contact

AutoGPT

The pioneering autonomous AI agent that sparked the AI agent revolution.

From Free