Sources of the information:
https://www.ncs.gov.in/
https://police.assam.gov.in/
https://ssc.nic.in/
https://www.indianrailways.gov.in/
https://www.upsc.gov.in/
https://www.drdo.gov.in
http://hc.ap.nic.in/
https://ojas.gujarat.gov.in/
https://gpsc-ojas.gujarat.gov.in/
http://bsf.nic.in/en/recruitment.html
https://rpsc.rajasthan.gov.in/
http://mponline.gov.in/portal/
http://uppsc.up.nic.in/
https://joinindianarmy.nic.in/
https://www.joinindiannavy.gov.in/
https://indianairforce.nic.in/
https://joinindiancoastguard.gov.in/
https://www.isro.gov.in/