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- A platform with some huge collection of courses in different fields of science.
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- A free learn platform for school students/pupils.
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- Learn to type better and faster.
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- An open-source learning platform with some nice selection of topics with a monthly challenge.
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- An open-source learn platform for life-long learners.
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- The open-source flash cards learning tool with cross-platform support.
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- A flash cards learning tool, that has focus on teaching and being taught.
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- A search engine for consumers' products' manuals.
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- A platform for DIY creators with focus on micro-systems.
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- A search engine for your next course on the topic X.
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- An open-source search engine to find courses on "anything".
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- A platform to clear up this question for you.
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- The most established DIY platform.
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- Yup, a relatively big DIY platform.
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- A nice DIY community platform.
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- The wikipedia on how to do stuff.
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- A social platform for 3D-print DIY projects.