The announcement: https://www.notion.so/athensresearch/Athens-Joins-Y-Combinator-86b9dfa30f4141e5bf072fad8f95a6c7
Athens GitHub: https://github.com/athensresearch/athens/
Athens is “open-source Roam Research”. Athens is a networked notetaking app, written in ClojureScript and DataScript. The mission of Athens is to build tools for thought, for individuals and collectives.