The best replacement for devtmpfs is tmpfs.

The best alternatives to devtmpfs are rated as following:
★★★★★  tmpfs
★★★  udev

Your alternative for devtmpfs is not listed? Suggest!
Speaking about devtmpfs, one probably shouldn't forget about udev.

Other search terms related to devtmpfs and their ratings are:
★★★★★ udev
You have in mind a companion for devtmpfs and it is not yet here? Propose!



Google Trends

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devtmpfs
tmpfs
udev