What are some alternatives?
When comparing Pokémon Adventures in Aloma and PokeMMO, you can also consider the following products
Temtem - Temtem is a Massively Multiplayer Online and Role-playing video game released by Humble Bundle for PC and expecting to release for Console in earlier 2021.
EvoCreo - Embark on a journey through the world of Zenith.
Pokémon (series) - The official source for Pokémon news and information on the Pokémon Trading Card Game, apps, video games, animation, and the Pokédex.
Pokemon Showdown - Pokemon Showdown is a 2D, Fighting, Single and Multiplayer video game.
Tuxemon - Completely open source monster fighting RPG - capture and battle monsters against others!
OpMon - An open source Pokemon clone, with monster fights