However, I have some comments, do with it as you like, let's put this first: I like the layout and I think it's a very useful tool to compare libraries in general.
- I think Contributors per year and Releases per year, could be monthly or quarterly as it's more granular and yearly change doesn't say much for libraries that are only there for 1-2 years.
- Also the history-back makes the url change but doesn't get reflected in the page
- A "clear all" button would be nice
- It would be nice to merge some libraries, because sometimes a library changes it's name and it would be nice to merge the statistics. (e.g. https://moiva.io/?compare=@web/dev-server+es-dev-server)