A grid-based flowchart editor designed for speed. It’s optimized for the keyboard with a spreadsheet-like selection and movement mechanism.

I started working on it because I was tired of dragging boxes/arrows around in Miro while making dependency graphs for planning projects.

https://knotend.com/

A while back I did a Show HN about it, and have since rewrote and changed the concept a bit to be easier to use.