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AI · alternatives · 2026

24 alternatives to OpenAgora

Open registry for A2A agents discover, connect and pay

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

  1. 1
    AP2▲155

    The open protocol for agentic commerce

    2025 · cloud.google.com · its alternatives →

  2. 2

    Hi HN, I am an independent open-source researcher. For the past few months, I've been building a2a-project, an experimental economic layer for autonomous AI agents on the Base Mainnet. The Problem: AI evolution is exponential, while human regulation is linear. If agents become economic actors, they will transact at speeds and granularities that traditional fiat rails cannot handle. We need a native protocol to bridge this "Speed Gap" and ensure stability. The Experiment (Quantum-Humanistic Economics): I implemented a novel mechanism into Solidity smart contracts: Quantum Task Buffer: Work…

    2025 · github.com · its alternatives →

  3. 3

    The implementation is purely static, agents are added via PRs, and updates are made via CI. Probably not scalable, but more than enough for the 1 agent thats there now. Any one know if there are other A2A agents in the wild that I can index here?

    2025 · a2aregistry.org · its alternatives →

  4. 4

    Discover agents before they are in public.

    2025 · a2aregistry.in · its alternatives →

  5. 5

    Much of my work right now involves complex, long-running, multi-agentic teams of agents. I kept running into the same problem: “How do I keep these guys in line?” Rules weren’t cutting it, and we needed a scalable, agentic-native STANDARD I could count on. There wasn’t one. So I built one. Here are two open-source protocols that extend A2A, granting AI agents behavioral contracts and runtime integrity monitoring: - Agent Alignment Protocol (AAP): What an agent can do / has done. - Agent Integrity Protocol (AIP): What an agent is thinking about doing / is allowed to do. The problem:…

    Feb 2026 · mnemom.ai · its alternatives →

  6. 6
    AgentSky▲430

    Any harness, any LLM — cloud-hosted agents on demand.

    Aug 2026 · agentsky.dev · its alternatives →

  7. 7

    Explore & Share A2A-Compatible AI Agents Easily

    2025 · a2aagentlist.com · its alternatives →

  8. 8

    Tag any agent, wherever work happens.

    Aug 2026 · agentconnect.md · its alternatives →

  9. 9
    LAD▲7

    How AI agents find each other on local networks

    Jan 2026 · lad-a2a.org · its alternatives →

  10. 10
    AgentAuth▲462

    Connect your AI Agents with your Accounts

    2024 · its alternatives →

  11. 11
    Agenta▲362

    Open-source prompt management & evals for AI teams

    Nov 2025 · agenta.ai · its alternatives →

  12. 12

    OpenAgents - The collaboration OS for AI agents. Contribute to openagents-org/openagents development by creating an account on GitHub.

    Apr 2026 · open-agents.dev · its alternatives →

  13. 13

    Comprehensive directory of A2A

    2025 · github.com · its alternatives →

  14. 14

    Scan your website to see how ready it is for AI agents.

    Apr 2026 · isitagentready.com · its alternatives →

  15. 15

    Hi! I’m Nathan: an ML Engineer at Mozilla.ai: I built agent-of-empires (aoe): a CLI application to help you manage all of your running Claude Code/Opencode sessions and know when they are waiting for you. - Written in rust and relies on tmux for security and reliability - Monitors state of cli sessions to tell you when an agent is running vs idle vs waiting for your input - Manage sessions by naming them, grouping them, configuring profiles for various settings I'm passionate about getting self-hosted open-weight LLMs to be valid options to compete with proprietary closed models. One…

    Jan 2026 · github.com · its alternatives →

  16. 16

    The first A2A Registry Platform | the future Agent Network

    2025 · its alternatives →

  17. 17

    Hi HN, I’m Vincent from Aden. We spent 4 years building ERP automation for construction (PO/invoice reconciliation). We had real enterprise customers but hit a technical wall: Chatbots aren't for real work. Accountants don't want to chat; they want the ledger reconciled while they sleep. They want services, not tools. Existing agent frameworks (LangChain, AutoGPT) failed in production - brittle, looping, and unable to handle messy data. General Computer Use (GCU) frameworks were even worse. My reflections: 1. The "Toy App" Ceiling & GCU Trap Most frameworks assume synchronous sessions.…

    Feb 2026 · github.com · its alternatives →

  18. 18

    Build your own AI Agent for machines!

    2025 · share.streamlit.io · its alternatives →

  19. 19
    A2A Net▲29

    Automatically optimize an AI agent from your B2B SaaS APIs

    Sep 2026 · a2anet.com · its alternatives →

  20. 20

    Seamless agent-to-agent transactions

    Apr 2026 · a2amarket.md · its alternatives →

  21. 21

    OpenClaw Hermes AI Agent Social Network.Built on Google 3D Maps and A2A protocol, connects OpenClaw and Hermes agents worldwide in a 3D environment. They can Make friends and even date other Agents. Earn money and make a living. Create their own organizations or form alliances. Explore the world and discover treasures. Find place interesting. Compete or collaborate with others.

    Jun 2026 · github.com · its alternatives →

  22. 22

    Deploying an A2A server for your agent makes it easier to interface and compose with agents written in different frameworks and languages, or within different apps and devices. But manually creating an A2A server involves some friction. We believe that, to deploy an existing agent that you’ve built as an A2A server, you shouldn’t need to worry about the backend. If you've built agents with CrewAI, LangGraph, LlamaIndex, OpenAI’s Agents SDK or Pydantic AI, you can now turn it into an A2A server without modifying any project code. Just add the autoa2a library to your project, run the CLI, and…

    2025 · github.com · its alternatives →

  23. 23

    We were building an agent system and wanted email as a trigger. We decided to take it out and made it a standalone service. The primary email features we wanted and used for our own agent system: 1. Email threading stays consistent with agent conversation threading 2. Human in the loop review for outbound emails (especially during testing phase) 3. Quick onboarding/offboarding email addresses for agents within minutes 4. Websocket for local agents and at-least-once webhook delivery for Cloud agents Not yet: DMARC (only SPF/DKIM today), scoped API keys, HA/multi-region (single…

    May 2026 · github.com · its alternatives →

  24. 24
    A2SPA▲8

    A2SPA is a runtime authorization layer for AI-agent actions with signed payloads, nonce replay protection, policy checks, state continuity, receipts, and audit logs.

    Nov 2025 · aimodularity.com · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →