Can you name a significant new technology class that started out life as open source? Linux "copied" unix, k8s "copied" Omega, etc. Was there a new category of technology that came out of open source from the get-go?
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NoSQL databases?
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Clearly started as closed source inside Google. The mongos/cassandras of this world all popped up after the papers on BigTable etc came out of Google.
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Yup, Wikipedia seems to confirm that the emergence of modern NoSQL followed BigTable/MapReduce and Amazon's DynamoDB: en.m.wikipedia.org/wiki/NoSQ… Something like NoSQL is messy though, since it's defined by absence not presence of something...

NoSQL - Wikipedia

en.m.wikipedia.org
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Replying to @alexandrosM
Fair enough. Redis doesn’t copy one of their models, though it’s probably a stretch to consider it its own category. CouchDB is clearly inspired by Notes/Domino. Damn!

Jun 21, 2020 · 6:48 PM UTC

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Replying to @stilkov
Redis is an interesting one, and really born in the open. Thanks, I do think this is a good entry to the list. That said, they've recently modified their license to non "fully" open for reasons I fully understand.
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I take that back. It seems core Redis is still fully open under bsd 3-clause. They created RSALicense for some add on functionality.
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