The Agora tries to be client-agnostic; in that sense it can be based on whichever client/editor you prefer :)
Having said that, logseq is very promising as it's based on precisely the same architecture that the Agora uses now: Markdown in git repos. I would love it if [[sign up]] could be just "click here to start a digital garden in logseq and have it show up in the Agora".
Unfortunately the format that logseq uses to encode blocks is not compatible out of the box, as they use Markdown headings instead of nested lists -- but I've spoken to them and IIRC they have an issue open to support nested lists as a block encoding convention, which I personally believe makes sense (there is a tradeoff here, though).
