Company IIASA created these great apps:
Geo-Wiki pictures, Cropland Capture, Growers Nation, Picture Pile, FotoQuest Austria, FotoQuest Europe, Picture Paint, FotoQuest Go, FREI.RAUM.Netz, Mijn Park, Paysages France, GROW Observatory, FloodCitiSense, Natura Alert, AgroTutor, City Oases, LACO-Wiki Mobile, Postharvest Storage, FRA Quest, CropObserve, IIASA Connect, Crop Perils, and others..