8 Best Agno Alternatives in 2026 (Open Source)
Agno — Build, run, and manage agent platforms. Provides complete framework and runtime to own and control the entire agent platform stack with data isolation and security.
These 8 open-source tools do the same job. They are ordered by how closely they match Agno, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| Agno(original) | 42.4k | +3,535 | 2026-09-30 |
| Agno | 42.4k | +552 | 2026-09-30 |
| Eidolon | 492 | +1 | 2024-12-19 |
| Mastra | 28.5k | +973 | 2026-09-30 |
| voltagent | 10.7k | +587 | 2026-09-28 |
| LangChain | 147.3k | +23,455 | 2026-09-30 |
| Agent Development Kit (ADK) | 21.7k | +1,807 | 2026-09-30 |
| Spring AI Alibaba | 11.0k | +913 | 2026-08-25 |
| Go Micro | 23.1k | +1,924 | 2026-09-30 |
1. Agno
Build, run, manage agentic software at scale.
What sets it apart: Production-first agent runtime with built-in session isolation, approval workflows, and scalable FastAPI serving — unlike LangChain which is framework-first
Best for: Production multi-agent systems with session isolation; Enterprise agentic applications needing approval workflows and audit trails
2. Eidolon
The first AI Agent Server, Eidolon is a pluggable Agent SDK and enterprise ready, deployment server for Agentic applications
What sets it apart: vs LangChain/CrewAI: agents are deployed as HTTP services with built-in server, enabling true microservice agent architectures with dynamic inter-agent tool discovery
Best for: Deploying agents as production HTTP services; Multi-agent systems needing inter-agent communication
3. Mastra
From the team behind Gatsby, Mastra is a framework for building AI-powered applications and agents with a modern TypeScript stack.
What sets it apart: Unlike LangChain (Python-first, complex abstraction) or CrewAI (Python multi-agent), Mastra is purpose-built for TypeScript with native Next.js/React integration, graph-based workflows with .then()/.branch()/.parallel() syntax, and built-in evals — making it the most natural choice for JS/TS production agent development.
Best for: TypeScript/Node.js teams building production AI agents with React/Next.js frontends; Developers who want agent workflows with human-in-the-loop approval built into their existing JS stack
4. voltagent
AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework
What sets it apart: Full-stack TypeScript agent platform with built-in workflow engine, voice support, and observability console — more opinionated than Vercel AI SDK, more TypeScript-native than LangChain
Best for: TypeScript developers building production agent systems with observability; Multi-agent systems with workflow orchestration and voice capabilities
5. LangChain
The agent engineering platform
What sets it apart: vs other frameworks: Largest ecosystem with 100+ integrations, dual Python/JS support, backed by LangGraph for agent orchestration and LangSmith for production observability - the most widely adopted LLM framework
Best for: Building complex LLM applications with many integrations; Teams needing model interoperability and quick provider switching; Production AI applications requiring observability via LangSmith
6. Agent Development Kit (ADK)
An open-source, code-first Python toolkit for building, evaluating, and deploying sophisticated AI agents with flexibility and control.
What sets it apart: Applies software development principles and a graph-based runtime to AI agent creation for deterministic execution flows.
Best for: Developers seeking a code-first Python framework; Building complex, orchestrated agent workflows; Teams needing modular and testable agent systems
7. Spring AI Alibaba
Agentic AI Framework for Java Developers
What sets it apart: A production-ready Java framework with integrated admin platform for agent observability and MCP management.
Best for: Java developers building agentic applications; Creating complex multi-agent workflows; Enterprise agent platforms requiring observability
8. Go Micro
A Go agent harness and service framework
What sets it apart: Combines a mature Go microservices framework with dedicated AI agent construction tools.
Best for: Go developers building agent systems; Creating service-backed AI agents; Developing with a microservices architecture
FAQ
- What are the best alternatives to Agno?
- The closest open-source alternatives to Agno are Agno, Eidolon and Mastra, followed by voltagent, LangChain and Agent Development Kit (ADK). They are ranked by how closely they match what Agno does.
- Which Agno alternative is the most popular?
- LangChain has the most GitHub stars among Agno alternatives, with 147,320 stars.
- Which Agno alternative is the most actively maintained?
- By recent activity, Mastra (3,994 commits in the last 90 days) is the most actively developed alternative.