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.
Congratulations.
I remember that first tweet you made about it and the amazing response you got. Seems like people are really hungry for an open source Roam. This has got to be a bit awkward for the Roam guys, though 
I do wonder what your profitability motive is, now that you’re accepting investments.
Focused on making a good product first! Understanding users is upstream of making money.
And unlike closed source companies, customers/users of Athens are not locked in.