⭐ Merited by khaled0111 (1)
Imo, mempool.space, mentioned by Charles-Tim is far better and more user friendly. It shows the fee rate you need to pay for a low/medium/high priority transaction directly without having to analyse the chart.
But maybe I want to analyze the chart. 
In all seriousness though, as much as mempool.space is great for newbies, casual users, or anyone looking for a quick and reasonable fee estimation, you cannot get as much information from its charts as you can from Jochen's. Any time I want to accurately place my transaction somewhere in the mempool, then Jochen's site is a must.
Also, and if my memory serves me right, there have been times when jochen-hoenicke.de showed wrong fee estimations (higher than what is actually needed).
Jochen's site doesn't show fee estimations at all. It simply shows the data from his node in a graph. It's up to the user what they do with that info.