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It's awesome that you want to help us remove incorrect alternatives. Feel free to
report more applications below. But keep in mind that
the only reason for an
alternative not to be valid is if it doesn't share common functionality with
The Geometer's Sketchpad. It might
not be a good choice according to
you but it’s still an alternative. Read more about our thoughts about alternatives here.
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If you want to report an error on an application, for example if it's discontinued or the platforms is wrong, please go to the application and click the "Report This Application" button in the sidebar. You have to be registred to do this.