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pdx-tools
View maps, graphs, and tables of your save and compete in a casual, evergreen leaderboard of EU4 achievement speed runs. Upload and share your save with the world.
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pdx_unlimiter
A smart savegame manager, editor, and toolbox for all current major Paradox Grand Strategy games.
Nation Explorer on GitHub
I'm not sure though how many people would like to download an application just for this purpose. While this feature has indeed not been implemented by any other tool, you can find other web-based ones like https://eu4.osallek.net/wiki/1.35.3/idea-groups for ideas and https://pdx.tools for general analysis with more diverse features.
I primarily develop https://github.com/crschnick/pdx_unlimiter and also contribute to pdx tools.