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Pingo - Optimize images for the web quickly 🖼️⚡
Course Hero - Access 30 million course-specific study materials
Presentii - Imagine a tool that lets you capture audience interest in your presentation content as you present.
Quizlet - Quizlet allows you to review and create flashcards for a variety of subjects, such as math and reading.
SlideLizard - Powerpoint plug-in for live audience interaction