Font Flipper is a free web app that allows you to preview Google Fonts on top of your custom designs, without having to download the fonts first. It's essentially Tinder for Google Fonts.
Copyscape is a free plagiarism checker.
$Credits Starting at USD 50 / per user/month
Fully integrated, state of the art English writing tools to find duplicate content and check quality
$USD 5 / per user/month
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