Obsidian

Powerful local-first knowledge base with extensive plugin ecosystem, used by writers, researchers, and knowledge workers building interconnected note systems. The markdown-based approach and local storage ensure data ownership while plugins extend functionality infinitely. Writers use Obsidian to manage research for books worth $10000-1000000 in advances and royalties, organizing complex information efficiently. Researchers leverage it to build comprehensive literature databases that accelerate paper writing and improve publication quality, advancing careers worth hundreds of thousands in lifetime earnings.