Model Context Protocol alternatives
6 agents tools in the same lane as Model Context Protocol, ranked by editorial score.
MR
MCP Registry
Agents
6.6
Official discovery registry for Model Context Protocol servers, with a browsable UI and a public API.
Free· Free and open sourcemcp-server-discoveryagent-tooling
MT
MCP Toolbox for Databases
Agents · Multi-model
7.2
Open-source MCP server that wires AI agents and IDEs straight into 50+ production databases with auth, pooling, and observability baked in.
Free· Free and open source (Apache 2.0); self-hostedagent-database-accessmcp-server
GM
GameMaker MCP Server
Agents
Project-aware MCP server that gives AI coding agents structured, guarded access to GameMaker Studio projects.
Free· Free and open source (MIT license). Install via npm/npx.AI-assisted GML refactoringGameMaker project static analysis
AP
A2A Protocol
Agents
7.1
Open standard for letting AI agents from different frameworks talk to each other.
Free· Free and open source (Apache 2.0)multi-agent-systemsagent-interop
MA
Mastra
Agents · Multi-model (90+ providers)
8.1
Open-source TypeScript framework for building, deploying, and observing AI agents and workflows.
Freemium· Starter: $0 · Teams: $250 · Enterprise: Custom pricingai-agentsworkflow-orchestration
ME
Mem0
Agents · Model-agnostic — pluggable via OpenAI, Anthropic, Gemini, Ollama, LiteLLM (no in-house LLM)
Persistent memory layer for AI agents and LLM apps
Freemium· Hobby: Free · Starter: $19 · Pro: $249 · Enterprise: CustomLong-lived customer support copilotsPersonal AI companions and journaling agents