Hextom: Bulk Product Edit

This app is fantastic. Price seems high monthly, but if you have a lot of products like we do, that cost is covered by one bulk edit you need.
We have never experienced a glitch and changes are made (or reverted) easily. It even keeps a historical list of changes that can be reverted back with a click of a button (handy for temporary sales/ changes).
There are loads of bulk edits that can be done from descriptions, to tags, to skus, titles, and variants.