Browse free open source Multi-Agent Systems and projects below. Use the toggles on the left to filter open source Multi-Agent Systems by OS, license, language, programming language, and project status.

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  • 1
    OpenAI Agents SDK

    OpenAI Agents SDK

    A lightweight, powerful framework for multi-agent workflows

    The OpenAI Agents Python SDK is a powerful yet lightweight framework for developing multi-agent workflows. This framework enables developers to create and manage agents that can coordinate tasks autonomously, using a set of instructions, tools, guardrails, and handoffs. The SDK allows users to configure workflows in which agents can pass control to other agents as necessary, ensuring dynamic task management. It also includes a built-in tracing system for tracking, debugging, and optimizing agent activities.
    Downloads: 10 This Week
    Last Update:
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  • 2
    Agent Orchestrator

    Agent Orchestrator

    Agentic orchestrator for parallel coding agents

    Agent Orchestrator from Composio is an open-source orchestration layer designed to manage fleets of parallel AI coding agents working on a shared codebase. It enables each agent to operate independently in isolated git worktrees, handling tasks like fixing CI failures, addressing code review comments, and creating pull requests. The platform automates the coordination of multiple agents, reducing the need for manual oversight in complex development workflows. It supports a wide range of agents, runtimes, and tools, making it flexible and framework-agnostic. Through a centralized dashboard, developers can monitor progress, review outputs, and intervene only when human judgment is required. Agent Orchestrator transforms AI-assisted development into a scalable, autonomous system for continuous code improvement.
    Downloads: 8 This Week
    Last Update:
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  • 3
    MetaGPT

    MetaGPT

    The Multi-Agent Framework

    The Multi-Agent Framework: Given one line Requirement, return PRD, Design, Tasks, Repo. Assign different roles to GPTs to form a collaborative software entity for complex tasks. MetaGPT takes a one-line requirement as input and outputs user stories / competitive analysis/requirements/data structures / APIs / documents, etc. Internally, MetaGPT includes product managers/architects/project managers/engineers. It provides the entire process of a software company along with carefully orchestrated SOPs.
    Downloads: 7 This Week
    Last Update:
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  • 4
    Langroid

    Langroid

    Harness LLMs with Multi-Agent Programming

    Given the remarkable abilities of recent Large Language Models (LLMs), there is an unprecedented opportunity to build intelligent applications powered by this transformative technology. The top question for any enterprise is: how best to harness the power of LLMs for complex applications? For technical and practical reasons, building LLM-powered applications is not as simple as throwing a task at an LLM system and expecting it to do it. Effectively leveraging LLMs at scale requires a principled programming framework. In particular, there is often a need to maintain multiple LLM conversations, each instructed in different ways, and "responsible" for different aspects of a task.
    Downloads: 4 This Week
    Last Update:
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  • 5
    CAMEL AI

    CAMEL AI

    Finding the Scaling Law of Agents. A multi-agent framework

    The rapid advancement of conversational and chat-based language models has led to remarkable progress in complex task-solving. However, their success heavily relies on human input to guide the conversation, which can be challenging and time-consuming. This paper explores the potential of building scalable techniques to facilitate autonomous cooperation among communicative agents and provide insight into their "cognitive" processes. To address the challenges of achieving autonomous cooperation, we propose a novel communicative agent framework named role-playing. Our approach involves using inception prompting to guide chat agents toward task completion while maintaining consistency with human intentions. We showcase how role-playing can be used to generate conversational data for studying the behaviors and capabilities of chat agents, providing a valuable resource for investigating conversational language models.
    Downloads: 2 This Week
    Last Update:
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  • 6
    LLMStack

    LLMStack

    No-code multi-agent framework to build LLM Agents, workflows

    LLMStack is a no-code platform for building generative AI agents, workflows and chatbots, connecting them to your data and business processes. Build tailor-made generative AI agents, applications and chatbots that cater to your unique needs by chaining multiple LLMs. Seamlessly integrate your own data, internal tools and GPT-powered models without any coding experience using LLMStack's no-code builder. Trigger your AI chains from Slack or Discord. Deploy to the cloud or on-premise.
    Downloads: 2 This Week
    Last Update:
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  • 7
    Open Autonomy

    Open Autonomy

    A framework for the creation of autonomous agent services

    Open Autonomy is a framework that enables the development of autonomous economic agents (AEAs) capable of operating independently in various economic contexts.
    Downloads: 2 This Week
    Last Update:
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  • 8
    PraisonAI

    PraisonAI

    PraisonAI application combines AutoGen and CrewAI or similar framework

    PraisonAI application combines AutoGen and CrewAI or similar frameworks into a low-code solution for building and managing multi-agent LLM systems, focusing on simplicity, customization, and efficient human-agent collaboration. Chat with your ENTIRE Codebase. Praison AI, leveraging both AutoGen and CrewAI or any other agent framework, represents a low-code, centralized framework designed to simplify the creation and orchestration of multi-agent systems for various LLM applications, emphasizing ease of use, customization, and human-agent interaction.
    Downloads: 2 This Week
    Last Update:
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  • 9
    SwarmZero

    SwarmZero

    SwarmZero's SDK for building AI agents, swarms of agents and much more

    SwarmZero is an open-source platform designed for deploying and managing autonomous robot swarms. It enables collective coordination, decentralized decision-making, and real-time collaboration among large groups of autonomous agents, focusing on multi-robot systems and research in swarm robotics.
    Downloads: 2 This Week
    Last Update:
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  • 10
    AgentUniverse

    AgentUniverse

    agentUniverse is a LLM multi-agent framework

    AgentUniverse is a multi-agent AI framework that enables coordination between multiple intelligent agents for complex task execution and automation.
    Downloads: 1 This Week
    Last Update:
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  • 11
    AgentVerse

    AgentVerse

    Designed to facilitate the deployment of multiple LLM-based agents

    AgentVerse is designed to facilitate the deployment of multiple LLM-based agents in various applications, which primarily provides two frameworks: task-solving and simulation.
    Downloads: 1 This Week
    Last Update:
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  • 12
    VectorizedMultiAgentSimulator (VMAS)

    VectorizedMultiAgentSimulator (VMAS)

    VMAS is a vectorized differentiable simulator

    VectorizedMultiAgentSimulator is a high-performance, vectorized simulator for multi-agent systems, focusing on large-scale agent interactions in shared environments. It is designed for research in multi-agent reinforcement learning, robotics, and autonomous systems where thousands of agents need to be simulated efficiently.
    Downloads: 1 This Week
    Last Update:
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  • 13
    Zeta

    Zeta

    Build high-performance AI models with modular building blocks

    zeta is a deep learning library focused on providing cutting-edge AI and neural network models with a strong emphasis on research-grade architectures. It includes state-of-the-art implementations for rapid experimentation and model building.
    Downloads: 1 This Week
    Last Update:
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  • 14
    Jason is a fully-fledged interpreter for an extended version of AgentSpeak, a BDI agent-oriented logic programming language, and is implemented in Java. Using JADE a multi-agent system can be distributed over a network effortlessly. This project was moved to https://jason-lang.github.io
    Downloads: 16 This Week
    Last Update:
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  • 15
    masmt

    masmt

    A frame work for Multi agent system development

    MaSMT is a java based multi-agent system development framework, especially designed for development of English to Sinhala machine translation system. MaSMT also capable to develop any multi-agent based system through its architecture. Reference: B. Hettige, A. S. Karunananda, G. Rzevski, Multi-agent solution for managing complexity in English to Sinhala Machine Translation, International Journal of Design & Nature and Ecodynamics, Volume 11, Issue 2, 2016, 88 – 96. B. Hettige, A. S. Karunananda, G. Rzevski, ” MaSMT: A Multi-agent System Development Framework for English-Sinhala Machine Translation”, International Journal of Computational Linguistics and Natural Language Processing (IJCLNLP), Volume 2 Issue 7 July 2013.
    Downloads: 4 This Week
    Last Update:
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  • 16
    Orkas

    Orkas

    Open-source local-first desktop AI workforce coordinated through chat.

    Orkas is an open-source, local-first desktop AI workforce. A Commander turns goals into executable plans and coordinates specialist agents in parallel or sequence through one chat. Orkas can coordinate built-in agents and external local agents such as Claude Code, Codex, OpenClaw, OpenCode, Hermes, and other supported runtimes. Conversations, files, agent configuration, and model keys stay local; the open-source edition uses user-selected providers or compatible local model endpoints.
    Downloads: 4 This Week
    Last Update:
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  • 17

    SpiLLI

    Decentralized AI Inference

    SpiLLI provides infrastructure to manage, host, deploy and run Decentralized AI inference
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    Downloads: 1 This Week
    Last Update:
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  • 18
    AEA Framework

    AEA Framework

    A framework for autonomous economic agent (AEA) development

    agents-aea by Fetch.ai is a framework for building autonomous economic agents (AEAs) that can act independently, communicate, and transact on decentralized networks. It focuses on enabling AI-driven agents to participate in digital marketplaces and ecosystems.
    Downloads: 0 This Week
    Last Update:
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  • 19
    AMASBE (Advanced Multi Agent System Bullwhip Effect) is a bullwhip-effect control system for supply chains based on forecasts that uses Java Agent DEvelopment Framework (JADE).
    Downloads: 0 This Week
    Last Update:
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  • 20
    AgentForge

    AgentForge

    Extensible AGI Framework

    AgentForge is a framework for creating and deploying AI agents that can perform autonomous decision-making and task execution. It enables developers to define agent behaviors, train models, and integrate AI-powered automation into various applications.
    Downloads: 0 This Week
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  • 21
    Blackboard implements a lightweight, portable tuple space suitable for multi-agent system and distributed component design. Supports implicit invocation via content-filtered asynchronous events, blocking call semantics, and shared memory messaging.
    Downloads: 0 This Week
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  • 22
    BotSharp

    BotSharp

    AI Multi-Agent Framework in .NET

    Conversation as a platform (CaaP) is the future, so it's perfect that we're already offering the whole toolkits to our .NET developers using the BotSharp AI BOT Platform Builder to build a CaaP. It opens up as much learning power as possible for your own robots and precisely control every step of the AI processing pipeline. BotSharp is an open source machine learning framework for AI Bot platform builder. This project involves natural language understanding, computer vision and audio processing technologies, and aims to promote the development and application of intelligent robot assistants in information systems. Out-of-the-box machine learning algorithms allow ordinary programmers to develop artificial intelligence applications faster and easier. It's written in C# running on .Net Core that is full cross-platform framework. C# is a enterprise-grade programming language which is widely used to code business logic in information management-related system.
    Downloads: 0 This Week
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  • 23
    CRAB

    CRAB

    CRAB: Cross-environment Agent Benchmark for Multimodal Language Model

    CRAB (Composable and Reusable Autonomous Bots) is a framework for building modular, reusable AI agents that can perform complex tasks in various domains. It focuses on creating AI-driven workflows that can be composed of multiple autonomous agents working together.
    Downloads: 0 This Week
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  • 24

    Crimes Model

    Multiagent system for simulation of crime rates behavior.

    Multi-agent system developed in Repast Symphony 2.0, for the simulation of property crime rates behavior.
    Downloads: 0 This Week
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  • 25
    DevOpsGPT

    DevOpsGPT

    Multi agent system for AI-driven software development

    Welcome to the AI Driven Software Development Automation Solution, abbreviated as DevOpsGPT. We combine LLM (Large Language Model) with DevOps tools to convert natural language requirements into working software. This innovative feature greatly improves development efficiency, shortens development cycles, and reduces communication costs, resulting in higher-quality software delivery. The automated software development process significantly reduces delivery time, accelerating software deployment and iterations. By accurately understanding user requirements, DevOpsGPT minimizes the risk of communication errors and misunderstandings, enhancing collaboration efficiency between development and business teams. DevOpsGPT generates code and performs validation, ensuring the quality and reliability of the delivered software.
    Downloads: 0 This Week
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Open Source Multi-Agent Systems Guide

Open source multi-agent systems are collections of intelligent agents that work together to complete tasks, solve problems, and coordinate decisions across shared workflows. Each agent is typically designed with a specific responsibility, allowing the overall system to divide complex objectives into manageable activities. Because the underlying source code is publicly available, organizations can examine how the system operates, modify capabilities, and tailor deployments to meet operational requirements. This flexibility has made open source multi-agent systems an attractive option for businesses seeking greater control over AI-driven automation.

These systems are used across a wide range of industries to support research, customer service, business operations, software development, data analysis, and process orchestration. Agents can exchange information, assign work to one another, and collaborate to achieve goals that would be difficult for a single agent to accomplish efficiently. Organizations can also integrate these systems with existing applications, databases, APIs, and cloud environments to extend automation across multiple business functions while maintaining consistent workflows.

As AI adoption continues to expand, open source multi-agent systems are becoming increasingly valuable for organizations looking to build scalable and adaptable solutions. Their modular architecture allows new agents, capabilities, and workflows to be introduced without redesigning the entire environment. With active community contributions, ongoing innovation, and broad customization opportunities, these systems provide a practical foundation for businesses that want to develop advanced AI solutions while maintaining transparency and operational flexibility.

Features Provided by Open Source Multi-Agent Systems

  • Modular architecture: Separates agents into independent components, simplifying maintenance, testing, and future expansion.
  • Agent communication: Enables agents to exchange messages, coordinate actions, and share information efficiently.
  • Task orchestration: Assigns, schedules, and manages activities across multiple cooperating agents automatically.
  • Memory management: Preserves contextual information, improving continuity across complex workflows and extended interactions.
  • Tool integration: Connects agents with external services, databases, APIs, and business applications.
  • Role specialization: Allows individual agents to perform dedicated responsibilities based on unique capabilities or objectives.
  • Workflow automation: Coordinates repetitive processes while reducing manual intervention and improving operational consistency.
  • Scalability support: Expands agent capacity to accommodate increasing workloads without major architectural changes.

Types of Open Source Multi-Agent Systems

  • Hierarchical Multi-Agent Systems: Organize agents into leadership and worker roles for coordinated decision-making and task execution.
  • Collaborative Multi-Agent Systems: Enable agents to cooperate by sharing information, balancing workloads, and solving objectives collectively.
  • Competitive Multi-Agent Systems: Allow agents to pursue separate goals while adapting strategies based on the actions of other agents.
  • Distributed Multi-Agent Systems: Spread agents across multiple environments to improve resilience, scalability, and operational flexibility.
  • Event-Driven Multi-Agent Systems: Trigger agent actions from real-time events, updates, or external conditions requiring immediate responses.
  • Autonomous Multi-Agent Systems: Let agents independently analyze situations, make decisions, and complete assigned responsibilities with minimal human intervention.
  • Hybrid Multi-Agent Systems: Combine multiple coordination approaches to support varied workflows, complex reasoning, and changing operational requirements.

Advantages of Using Open Source Multi-Agent Systems

  • Greater flexibility: Customize agent behavior, workflows, and integrations to match changing operational requirements without unnecessary restrictions.
  • Cost efficiency: Reduce licensing expenses while allocating more budget toward infrastructure, deployment, and ongoing improvements.
  • Transparency: Inspect underlying code to understand decision-making processes, security practices, and implementation details.
  • Community collaboration: Benefit from shared enhancements, documentation, and practical knowledge contributed by experienced developers.
  • Faster innovation: Adopt emerging capabilities through frequent updates and collaborative development efforts.
  • Scalability: Expand agent deployments across growing workloads without major architectural changes.
  • Interoperability: Connect with diverse platforms, services, and data sources using widely supported standards.
  • Vendor independence: Maintain greater control over technology decisions without relying on a single commercial provider.

What Types of Users Use Open Source Multi-Agent Systems?

  • AI research teams: Build, test, and refine collaborative agent workflows for experimentation, automation, and model evaluation.
  • Enterprise IT departments: Coordinate complex business processes using multiple intelligent agents across connected business tools.
  • Application developers: Create scalable applications requiring specialized agents that communicate, delegate, and complete tasks together.
  • Academic institutions: Study distributed intelligence, agent collaboration, and autonomous decision-making through practical research projects.
  • Robotics engineers: Manage coordinated behaviors between multiple autonomous agents operating in physical or simulated environments.
  • Data science teams: Automate data collection, analysis, validation, and reporting through specialized collaborative agents.
  • Operations managers: Streamline repetitive operational activities by assigning coordinated responsibilities across multiple intelligent agents.
  • Product development teams: Prototype intelligent features that require planning, reasoning, and coordinated task execution.
  • Cybersecurity teams: Monitor, investigate, and respond to security events using multiple specialized agents working together.

How Much Do Open Source Multi-Agent Systems Cost?

The cost of open source multi-agent systems can vary widely depending on deployment requirements, infrastructure, and the level of customization needed. While the underlying open source technology is often available without licensing fees, organizations should still budget for implementation, configuration, testing, and ongoing maintenance. Small teams with in-house technical expertise may deploy these systems at a relatively low cost, whereas larger organizations with complex workflows may require a more significant investment in infrastructure and development resources.

Additional expenses may include cloud computing, storage, monitoring, security, staff training, and integration with existing business tools. Organizations that require advanced capabilities, high availability, or enterprise-grade support may also choose to purchase commercial support services from third-party providers. Evaluating both upfront and long-term operational costs helps businesses determine the total investment required to successfully deploy and maintain open source multi-agent systems.

What Software Can Integrate With Open Source Multi-Agent Systems?

Open source multi-agent systems can integrate with customer relationship management platforms, enterprise resource planning solutions, project management tools, communication platforms, data warehouses, analytics platforms, cloud infrastructure services, workflow automation tools, identity and access management solutions, and database platforms. They can also connect with application programming interfaces, messaging services, knowledge management platforms, document management systems, monitoring tools, and business intelligence solutions.

These integrations allow agents to exchange information, automate business processes, coordinate tasks, retrieve organizational knowledge, monitor operations, and generate insights across multiple business functions. Many organizations also connect multi-agent systems with machine learning platforms, search technologies, and collaboration tools to improve decision-making and streamline workflows. Selecting integrations should depend on security requirements, scalability goals, data accessibility, and compatibility with existing technology investments.

Trends Related to Open Source Multi-Agent Systems

  • More organizations are adopting collaborative AI architectures to solve complex workflows across multiple departments.
  • Developers increasingly emphasize modular agent designs that simplify customization, maintenance, and future expansion.
  • Better interoperability allows different frameworks, models, and services to work together more efficiently.
  • Demand for local deployment continues growing because organizations want greater control over sensitive information.
  • Memory management capabilities are becoming more advanced, enabling agents to retain useful context across longer tasks.
  • Improved orchestration methods help coordinate specialized agents while reducing duplicated work and unnecessary processing.
  • Visual workflow builders make multi-agent environments easier for technical and business teams to configure.
  • Performance monitoring features provide deeper visibility into agent behavior, resource usage, and overall task outcomes.
  • Community-driven innovation accelerates new integrations, documentation improvements, and shared development resources.

How To Get Started With Open Source Multi-Agent Systems

Selecting the right open source multi-agent systems starts with identifying the goals the system must achieve and the complexity of the workflows it will support. Consider whether it is intended for research, automation, customer interactions, data processing, or collaborative decision-making, since different options emphasize different strengths.

Evaluate how well the system supports scalability, interoperability, and customization. Review available documentation, community activity, update frequency, and licensing terms to understand long-term viability. Integration capabilities are equally important, especially if the system must connect with business applications, cloud services, databases, APIs, or AI models.

Performance, security, and deployment flexibility should also influence your decision. Determine whether the system can operate on your preferred infrastructure, supports monitoring and debugging, and includes tools for managing multiple agents efficiently. Testing several options with realistic workloads before making a final decision helps confirm that the chosen system meets technical requirements, operational expectations, and future growth plans.