The fishing add-on with a Forever version is OneKeyFishing, which puts casting, hooking, looting and lures on one key. Check each page below for the latest status, as this list was written in November and authors have been updating.

Add-on What it says it does Forever when written
OneKeyFishing One key to cast, hook, loot, apply lures and open clams, with gear swap and catch stats Written for Forever
FishMaster Handles lures and fishing gear No Forever file
GatherMate2 Records where you gather, including fishing pools No Forever file on 1 November, but the source had added support

We haven't fished with these ourselves, so try them on a quiet evening rather than trusting our table.

Keeping pools on your map

Without GatherMate2, the game's own tracking is your fallback. If it's still missing a release when you read this, gathering add-ons lists other options.

Selling your catch

Auctionator helps with posting fish and cooking materials at the auction house, and auction house tools goes further.

Learning the profession itself: our sister site has profession guides.