In Akilam
According to Akilattirattu Ammanai, the religious book of Ayyavazhi, Agastya was created from the mind of lord Shiva inorder to offer boons to Kaliyan (See:Boons offered to Kaliyan). As per the order of Siva, Agastya offered many boons including all worldly knowledge to him.
So as per Ayyavazhi, in Kali Yug all the knowledge, including the basic formulae and forms of modern scientific technologies came from Agastya.
Read more about this topic: Agastya