Used to be my favourite metal genre when i was younger. TesseracT are quite awesome and if you like this djent style (high-gain, distorted palm-muted guitar sound), you will probably like Meshuggah, Animals As Leaders, Periphery, Gojira and Vildhjarta.
Dream Theater were THE prog metal band, but imo their last really good album was A Train Of Thought back in 2003. Some of my favorite bands are Fates Warning, Psychotic Waltz and Watchtower. If mathcore with brutal vocals is considered prog metal, then i'll add Between The Buried and Me and The Dillinger Escape Plan to my list. After all these years my favorite prog metal album is still Promised Land by Queensryche.
Girish, these guys are from your country and they are unbelievable, do you know them?