Request for an older process mapping site that allowed for interactivity?

I'm looking for a small older site (that may or may not still exist), maybe 5-10 years old, where you could create process maps for a UI.

It allowed for creating simply with text and tab structure, but also allowed for clicking and changing between the screens. It eventually added the ability to do a little light coding (javascript maybe) and the ability to link to a Figma design for the ui. It had 4 views, and it felt similar to this site https://flowchart.fun but with more features.

It's been bothering me for years now as it was pretty useful even though it was just a browser app. Does anyone remember this or something like it? Thanks