The best replacement for cover stitch is serger.

The best alternatives to cover stitch are rated as following:
★★★★★  serger
★  overlock

Your alternative for cover stitch is not listed? Suggest!
Speaking about cover stitch, one probably shouldn't forget about serger.

Other search terms related to cover stitch and their ratings are:
★★★★★ serger
★★ pfaff serger
★★ brother serger
You have in mind a companion for cover stitch and it is not yet here? Propose!



Google Trends

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cover stitch
serger
overlock