Obsidian
Obsidian note-taking app
5 practitioners working with Obsidian:

Eugene Yan's Personal AI Workflow
How an Amazon Principal Scientist builds personal AI tools for writing, reflecting, and staying informed

Jinyoung Kim's AI4PKM System
How a Naver data scientist built a multi-agent system where AI maintains your personal knowledge base automatically

shmlkv's AI Building Pipeline
How a fullstack engineer chains specialized models to build everything from DNA analysis tools to automated video generators
Steph Ango's File Over App Philosophy
How the Obsidian CEO builds personal systems around plain text files, local-first tools, and deliberate friction with AI.

Teresa Torres's Claude Code Task System
How the Continuous Discovery author built a personal operating system with Claude Code, Obsidian, and custom slash commands