Pokemon Cosmos : Do not think Pokemon Cosmos is a ROM hack of any Pokemon game. Instead, it is a fully developed Pokemon game with RPG Maker XP.
Pokemon Sigma Version is from RMXP for the first time almost a year ago, RMXP and Pokemon Essentials were perfect substitutes.
Pokemon Gold EX : Sometimes, just from a close friend and we can create something big – something great. Pokemon Gold EX is a hack of Pokemon Gold and it was created like that, from a friend of the author.
Pokemon Style Battling (Untitled Project) is the name of a game with the Pokemon ideas but in a newer style. Of course it comes from PC platform with the support of RPG Maker XP.
Pokemon Crystal Clear is a hack of Pokemon Crystal. By getting so bored from the original game because it is so easy, the author of this hack created his own game with more difficult challenges ahead.