This and the GP comment got me curious to look at past threads because I remember previous discussion of that project. In case anyone else is curious:

Show HN: Eraser — Excalidraw-based visual meeting canvas - https://news.ycombinator.com/item?id=26330288 - March 2021 (8 comments)

One Year of Excalidraw - https://news.ycombinator.com/item?id=25608336 - Jan 2021 (19 comments)

Show HN: Create a Slideshow with Excalidraw - https://news.ycombinator.com/item?id=25081914 - Nov 2020 (1 comment)

Excalidraw whiteboard – easily sketch diagrams with a hand-drawn feel - https://news.ycombinator.com/item?id=23525648 - June 2020 (54 comments)

Building Excalidraw's P2P Collaboration Feature - https://news.ycombinator.com/item?id=22719576 - March 2020 (1 comment)

End-to-end encryption in the browser - https://news.ycombinator.com/item?id=22663435 - March 2020 (107 comments)

End-to-End Encryption in the Browser and how we did it in Excalidraw - https://news.ycombinator.com/item?id=22655009 - March 2020 (4 comments)

Show HN: Excalidraw – Sketch Hand-Drawn Like Diagrams - https://news.ycombinator.com/item?id=22146973 - Jan 2020 (6 comments)

Excalidraw – a whiteboard tool to sketch hand-drawn diagrams (excalidraw.com) - https://news.ycombinator.com/item?id=22104502 - Jan 2020 (3 comments)

Excalidraw – a whiteboard tool that lets you sketch hand-drawn diagrams - https://news.ycombinator.com/item?id=22101381 - Jan 2020 (21 comments)