Community Mods

UI

https://github.com/pret/pokeemerald/wiki/Reset-Legendaries-When-Beating-Elite-Four
https://github.com/PokemonSanFran/pokeemerald/wiki/Unbound-Quest-Menu
https://github.com/TeamAquasHideout/Team-Aquas-Asset-Repo/wiki/How-to-Change-the-Title-Screen-for-pokeemerald-(and-expansion)
https://github.com/TeamAquasHideout/Team-Aquas-Asset-Repo/wiki/Generating-Title-Screen-Text-Graphic
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-25#post-10780812
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-17#post-10441093
https://github.com/pret/pokeemerald/wiki/Nickname-your-Pok%C3%A9mon-from-the-party-menu
https://github.com/Ashingda/pokeemerald-public/wiki/Move-Relearner-as-an-option-in-the-Pok%C3%A9mon-Party-Screen-Ver.2
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-11#post-10266385
https://github.com/pret/pokeemerald/wiki/Tweaking-the-count-of-health-beeps
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-3#post-10127351
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-5#post-10167488
https://github.com/pret/pokeemerald/wiki/Full-Screen-Start-Menu-by-Archie-and-Mudskip
https://github.com/pret/pokeemerald/wiki/Prompt-for-reusing-Repels
https://github.com/pret/pokeemerald/wiki/Make-Key-Items-That-Cannot-Be-Used-In-The-Field-Not-Show-A-Use-or-Register-Option
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-15#post-10380770

Items

https://www.pokecommunity.com/showpost.php?p=10217718&postcount=172
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-5#post-10164065
https://github.com/PokemonSanFran/pokeemerald/wiki/QoL-Field-Moves
https://www.pokecommunity.com/showpost.php?p=10126502&postcount=46
https://www.pokecommunity.com/showpost.php?p=10349397&postcount=258
https://www.pokecommunity.com/threads/simple-modifications-directory.416647/page-15#post-10401331
https://www.pokecommunity.com/showpost.php?p=10182590&postcount=117
https://github.com/pret/pokeemerald/wiki/Item-Automatically-Goes-to-PC-if-Bag-is-Full
https://github.com/pret/pokeemerald/wiki/Make-the-Bag-Able-to-Hold-120-Items-Instead-of-30
https://github.com/TeamAquasHideout/Team-Aquas-Asset-Repo/wiki/Making-Hidden-Items-Respawn-Everyday
https://github.com/pret/pokeemerald/wiki/Rock-Smash-Gives-Items

Scripting

https://www.pokecommunity.com/showpost.php?p=10193109