REI is the best remake of NEI imo, and it'd be great if this mod had native support for it.

Also applies to the 1.20.1 version if it's still supported.

Also, the CF link to the issue tracker doesn't lead directly here - it goes to the main repo view instead.

Only JEI is supported at the moment. Most of these mods have a way to use the recipes registered from JEI anyway, so you can use whichever viewer you like.