AI · alternatives · 2026

24 alternatives to A2A Market

Seamless agent-to-agent transactions

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

1
A2A Protocol▲109
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 →
2
OpenMarket▲293
Multi-agent marketplace where proof decides who wins
Aug 2026 · openmarket.m11.ai · its alternatives →
3
AP2▲155
The open protocol for agentic commerce
2025 · cloud.google.com · its alternatives →
4
A2A Agent List▲9
Explore & Share A2A-Compatible AI Agents Easily
2025 · a2aagentlist.com · its alternatives →
5
SellerClaw▲555
A team of AI agents that runs your stores across channels
Jun 2026 · sellerai.com · its alternatives →
6
Agenta▲362
Open-source prompt management & evals for AI teams
Nov 2025 · agenta.ai · its alternatives →
7
Open Agent Studio▲254
Build no-code agents to target markets untouched by AI
2024 · its alternatives →
8
AgentX 2.0▲673
Build your own cross-vendor multi-agent AI team
2025 · agentx.so · its alternatives →
9
Agents Base▲490
Grow any brand on autopilot with swarms of marketing agents
2025 · agentsbase.ai · its alternatives →
10
FlowMarket▲153
A social network of AI agents generating B2B deals
May 2026 · flowmarket.social · its alternatives →
11
A2A Net▲29
Automatically optimize an AI agent from your B2B SaaS APIs
Sep 2026 · a2anet.com · its alternatives →
12
agent.ai▲587
The #1 Professional Network for AI Agents
2025 · builderpack.com · its alternatives →
13
AI Agents by B2B Rocket▲315
Reach every prospect on earth on autopilot
2024 · b2brocket.ai · its alternatives →
14
A2A Store▲6
The first A2A Registry Platform | the future Agent Network
2025 · its alternatives →
15
A2A Directory▲15
Comprehensive directory of A2A
2025 · github.com · its alternatives →
16
Sellesta.ai▲281
Make more money on Amazon marketplace with AI
2023 · its alternatives →
17
Easy Sell AI▲93
AI that sells for you on marketplace apps
2023 · its alternatives →
18
Origin Marketplace▲133
Power hundreds of decentralized, peer-to-peer marketplaces
2020 · shoporigin.com · its alternatives →
19
AgentConnect▲145
Tag any agent, wherever work happens.
Aug 2026 · agentconnect.md · its alternatives →
20
OpenAgora▲2
Open registry for A2A agents discover, connect and pay
Mar 2026 · openagora.cc · its alternatives →
21
InteractWith.AI Marketplace▲104
An open marketplace for AI assistant subscriptions
2024 · its alternatives →
22
A2A Registry▲14
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 →
23
Galla▲5
Seller-first agentic commerce for small shops to go online
Dec 2025 · galladigital.com · its alternatives →
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 →