The only thing I know with half of those features that's discontinued is the old Darkroom app but that doesn't tackle some of the bigger compatibilities. Source: about 2 years ago

Not sure if this is applicable, but if you're using Word or Scrivener or something, you may want to switch to a plaintext editor like Dark Room or Typora--something that won't underline your spelling and grammar mistakes. It doesn't even have italics or bold to get in your way. Dark Room is a little old, but I found it here: https://codex.jjafuller.com/books/dark-room/page/overview. Source: over 2 years ago

I use DarkRoom. Full screen, no distractions, no "fancy" auto-formatting. Source: about 3 years ago

I'm constantly stunned how little this Chrome extension is recommended for this issue. Source: about 1 year ago

I'm not sure what exactly this is, but based on the description, I think I can stay with Tabs Outliner. Source: about 1 year ago

- TabsOutliner- Wonderful Chrome tab mgmt extension (IMO; the best I've tried). Love how it lets you lay out your open tabs in an outline format, which my brain loves. You can drag & drop and even open a duplicate / clone window and move between the windows! Very helpful when your tab list gets too long. Source: about 1 year ago

Tabs Outliner keeps every crashed session without limit. Source: over 1 year ago

Tabs Outliner - Creates a seperate chrome window that can unload and reload whole tabs and windows. Source: almost 2 years ago