First thing I noticed is that the UI looks exactly like Linear. Have seen more companies copy the same UI but not sure if it was actually Linear that started it.
Haha, I think the evolution was something like this:
1. Slack introduces "sidebar" concept
2. Notion takes it a step further
3. Everyone starts doing sidebars, including Linear
We took inspiration from Linear's 'search button in sidebar' and 'profile pic in sidebar', which I think were maybe their unique contributions to the tradition :)
Really, it's just a tab strip, no? (But with fixed heterogeneous tabs, as opposed to a set of homogeneous ones the user adds/removes from as they open/close docs.)
Reminds me of the vertical tab strips in FF w/ TreeStyleTabs.
