Pokemon Altair is a hack made from Pokemon Emerald. Well, the author of this hack is a Japanese so its language is Japanese in origin. Its last patch was in 2011, and an English patch was made in June 18, 2014 (just a fan-made one).
Pokemon A New Dawn is another FireRed hack of Joexv on PokeCommunity. He is a simple man, so he want his product become plain graphically. His hack is used for those ones who want to have a familiar game, but with a new envoriment and manything else.
Pokemon (Old) Ruby is a hack based on the famous and well-known title: Pokemon Ruby. The authors of this hack are yohaneZ MBA & Abdurahman fauzi, they are Indonesian. It is still Ruby, but not Ruby at the same time.
Pokemon: A Grand Day Out is a game made from Pokemon LeafGreen – the twin brother of Pokemon FireRed (and it is also the incarnation of Pokemon Green on Gameboy Color). This hack is not the same as the others on PokeCommunity.
Pokemon Sun Ruby: Besides Pokemon FireRed, Pokemon Ruby is also the favorite dish which every Pokemon fans must enjoy and taste one time. It is also the base of many famous ROM hacks. This time, when Pokemon Sun and Moon are released… a Ruby hack called Sun Ruby is available to play. Check it out.