Power Stack
Obsidian is a powerful knowledge management tool built on plain markdown files stored locally on your machine. Its signature feature is bi-directional linking: connect notes together and navigate your knowledge graph visually. Unlike cloud-based tools, your notes live as plain text files you fully own and control. Obsidian has a massive plugin ecosystem (1000+ plugins), supports Dataview for querying your notes like a database, Canvas for visual thinking, and daily notes workflows. For AI builders and knowledge workers, it is the go-to tool for building a personal knowledge base, saving research, capturing prompts and workflows, and structuring thinking. Free for personal use; Sync and Publish are paid add-ons.