The best replacement for open is closed headphones.

The best alternatives to open are rated as following:

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★★★★★	closed adoption
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Speaking about open, one probably shouldn't forget about download.

Other search terms related to open and their ratings are:

★★★★★	download
★★	python

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Scale is based on the average worldwide traffic of open in all years. Click on graph for more.

open

closed headphones

closed adoption