Kollidam

 https://www.google.com/search?q=Kollidam

Pothigai

https://bridgroom.blogspot.com/search/label/GandamadanaParvathamTemple
https://en.wikipedia.org/wiki/Pothigai
http://divyadarisanams.blogspot.com/2011/07/pothigai-malai-hills-spiritual-journey.html

Sabhapati

Sabhāpati's writings inspired by agastya vision survive in 

1. Sanskrit,
2. Tamil, 
3. Hindi, 
4. English and 
5. German (with bibliographic records also in Bengali, French, and Urdu) 

https://www.google.com/search?q=sabahapathi

mekedatu

 https://www.google.com/search?q=mekedatu

Ananthamangalam

 https://www.google.com/search?q=Ananthamangalam

Naduk

 https://www.google.com/search?q=Nadukkaveri

shuk

 https://www.google.com/search?q=shuk+ravana+agastya