Reference
Alternatives
This index lists 82 alternatives pages. Each page names the other listings in the same category, or a shared tag when the category has more than 12 listings. A page exists only when that set has at least 3 other listings. The table uses fields the directory records. A missing field reads not documented. Nothing on these pages is scored.
Last verified 2026-11-03
Protocols
- A2A alternatives9 documented options
- Agent Network Protocol alternatives9 documented options
- Agentic Commerce Protocol alternatives9 documented options
- AGNTCY alternatives9 documented options
- Google Connected Apps Platform alternatives9 documented options
- Model Context Protocol alternatives9 documented options
- PACT alternatives9 documented options
- Personal Agent Protocol alternatives9 documented options
- Universal Commerce Protocol alternatives9 documented options
- WebMCP alternatives9 documented options
Payment rails
- Agent Vault alternatives8 documented options
- Agentcard opencommerce alternatives8 documented options
- AP2 alternatives8 documented options
- Celestia Voyager alternatives4 documented options
- Circle Agent Wallets alternatives9 documented options
- Coinbase Agentic Wallet alternatives9 documented options
- Crossmint Agent Checkout alternatives8 documented options
- Fireblocks Agentic Payments Suite alternatives15 documented options
- Hedera Agent Accounts alternatives9 documented options
- Kite Agent Passport alternatives9 documented options
- L402 alternatives15 documented options
- Machine Payments Protocol alternatives15 documented options
- Mastercard Agent Pay for Machines alternatives15 documented options
- Mercury MCP alternatives4 documented options
- MetaMask Agent Wallet alternatives9 documented options
- Nevermined alternatives15 documented options
- PayAI x402 facilitator alternatives15 documented options
- Polygon Agent CLI alternatives9 documented options
- px402 alternatives15 documented options
- Shop MCP alternatives8 documented options
- Skyfire alternatives9 documented options
- Stabletrust API alternatives9 documented options
- Stripe link-cli alternatives8 documented options
- Stripe Treasury for agents alternatives4 documented options
- Sui Agentic Payments alternatives15 documented options
- Tempo Wallet alternatives9 documented options
- Visa Intelligent Commerce alternatives8 documented options
- Wavelength alternatives9 documented options
- x402 alternatives15 documented options
Exchanges and markets
- Accords alternatives12 documented options
- Akash Network alternatives4 documented options
- Architect alternatives4 documented options
- Bittensor alternatives4 documented options
- Gensyn alternatives4 documented options
- Kleros Escrow alternatives5 documented options
- Olas Mech Marketplace alternatives5 documented options
- Ornn alternatives4 documented options
- Pactwright alternatives5 documented options
- Render Network alternatives8 documented options
- TermiX alternatives5 documented options
- Vangrid alternatives5 documented options
- Virtuals Protocol alternatives5 documented options
Identity and trust
- 1Password for Agents alternatives11 documented options
- Beltic KYA alternatives11 documented options
- Concordium Agent Registry alternatives11 documented options
- ERC-8004 alternatives11 documented options
- IBM Agent Identity alternatives11 documented options
- Infisical open source Agent Vault alternatives11 documented options
- Microsoft Entra Agent ID alternatives11 documented options
- ServiceNow AI Passport alternatives11 documented options
- Socure Agent Intelligence alternatives11 documented options
- Visa Trusted Agent Protocol alternatives11 documented options
- Web Bot Auth alternatives11 documented options
- x401 alternatives11 documented options
Governance and mandates
- Guardrails AI alternatives7 documented options
- Invariant alternatives7 documented options
- Lakera Guard alternatives7 documented options
- Ledger Agent Intent alternatives7 documented options
- LiteLLM Proxy alternatives7 documented options
- NeMo Guardrails alternatives7 documented options
- Open Policy Agent alternatives7 documented options
- Walmart Agent Gateway alternatives7 documented options
Frameworks and runtimes
- Claude Agent SDK alternatives9 documented options
- CrewAI alternatives9 documented options
- Google ADK alternatives9 documented options
- LangGraph alternatives9 documented options
- Mastra alternatives9 documented options
- Microsoft Agent Framework alternatives9 documented options
- OpenAI Agents SDK alternatives9 documented options
- Pydantic AI alternatives9 documented options
- smolagents alternatives9 documented options
- Strands Agents alternatives9 documented options