Comment by joelg

Papier - replace your new tab page with a markdown scratchpad. Dead-simple, local, and beautiful.

https://chrome.google.com/webstore/detail/papier/hhjeaokafpl...

Visual History - augment back/forward with tree-like hierarchy navigation (disclaimer; made this one)

https://chrome.google.com/webstore/detail/visual-history/nkc...