Comparison Research by Ry Walker

A comparison of 9 agent coordination protocols, layers, and frameworks — from the A2A standard (v1.0 under the Linux Foundation) and the layered protocol stack (AG-UI, Zed ACP, AGNTCY) to orchestration frameworks (CrewAI, AutoGen, LangGraph). Who coordinates agents, and how?

A comparison of 10 tools for agent memory and self-improvement — from memory layers like Mem0, Letta, Hindsight, and Cognee to evolving playbook systems like ACE, plus the research foundations driving the category.

A comparison of 15 agentic skills methods, catalogs, and registries, with current workflow changes, licensing and portability limits, and adjacent execution platforms.

A comparison of 11 tools that track AI coding impact — attribution, token costs, productivity metrics, and code quality — across the new wave of engineering intelligence platforms built for the AI-assisted development era.

A comparison of 9 local sandbox tools for coding agents, covering OS policy, containers, microVMs, credentials, current releases, and built-in agent controls.

Comparison of 11 SEO and GEO agent skills for Claude Code and AI coding agents — from GEO-first audit tools and deterministic rule engines to full marketing skill libraries. Covers citability scoring, AI crawler analysis, live citation checking, content optimization, and agency workflows.