There are many Ramayana books’re written after Valmiki Ramayana. Important of them are Vyasa Ramayana, Kamba Ramayana, Agasthya Ramayana, Hanumat Ramayana, Tulsi Ramayana, Adhyatma Ramayana etc. Agasthya Ramayana was written by Agasthya Maharshi. Agasthya Maharshi is considered as a Dravidian monk who is more related to God Shiva. He was there when the entire Ramayana incidents happened, so it is more reliable to hear from him.  Wise men say that Rama Ravana war is happening everywhere in every mind.