Blog
Weekly digests, selection guides and analysis
Harness engineering: the part of an agent you actually build
You cannot change the model much. The loop around it — which tools exist, what the model sees, what it may touch, where it runs — is yours, and the projects in this catalogue have already made those decisions in public.
Choosing an agent framework: five questions that eliminate options
Feature tables do not choose between LangGraph, Pydantic AI, LangChain and deepseek-harness. Durability, the corpus, your service's language, maintenance status and debuggability do.
Which "open source" AI agent tools are not actually open source
Of the 147 projects catalogued here, 140 carry an OSI-approved licence and seven do not. What n8n, AutoGPT, Dify, AutoGen, Crush, Phoenix and TEN Framework restrict, why GitHub's licence field misleads in both directions, and what to check.