excalidraw/excalidraw is an open-source online whiteboard for drawing diagrams with hand-drawn-looking shapes and lines. The latest release in this repository is v0.18.1. It is used to sketch visual ideas, wireframes, and collaborative designs.
The repository was created on January 2, 2020, and contains both the editor library and the web app source. The README explains that the editor library provides an infinite canvas (a work area not limited to the screen size), image insertion, multilingual support, and image export. The web app includes real-time collaborative editing and end-to-end encryption (a way of preventing the content from being viewed in transit), plus automatic saving in the browser. It is possible to use only the library on its own within the same repository, or to work with the web app as a whole. The primary language is TypeScript, the license is MIT, and the repository has 134277 stars.
However, the changelog for v0.18.1 is not in this record, so what this release changed cannot be known. On a 10-point scale, the only evaluation score left is the momentum entry at 7.6, while the novelty, technology, and quality entries are empty. These values are not the result of a separate comparison test but evaluation scores left in the record. No performance comparison or adoption-case figures are presented either. So this repository is worth looking at as a candidate for a hand-drawn-style diagram tool, but if v0.18.1 is to be used as the baseline for adoption, the repository's release notes need to be checked separately.