| Central Government | |
| Departments | Website |
| Government of India | https://www.india.gov.in/ |
| Ministry of Social Justice and Empowerment | http://socialjustice.nic.in/ |
| Ministry of Finance Government of India | https://finmin.nic.in/ |
| Ministry of Housing and Urban Affairs -Government of India | http://mohua.gov.in |
| Election Commission of India | http://eci.nic.in/eci/eci.html |
| State Government | |
| Departments | Website |
| Tamil Nadu State Finance Commission | https://www.tn.gov.in/tnsfc/ |
| Revenue Department-Tsunami | https://www.tn.gov.in/tsunami/ |
| Tamil Nadu Public Works Department | https://tnpwd.com/ |
| Tamil Nadu Corporation for Development of Women | http://www.tamilnadumahalir.org/ |
| Chennai High Court | http://www.hcmadras.tn.nic.in/ |
| Tamil Nadu Tourism | http://www.tamilnadutourism.org/ |
| Stationary and Printing Department | http://www.stationeryprinting.tn.gov.in/aboutus.php |
| Tamil Nadu Electricity Bord [TANGEDCO] | https://www.tangedco.gov.in/ |
| Forests Department | http://www.forests.tn.nic.in/ |
| Fire and Rescue Services | http://www.tnfrs.tn.nic.in/ |
| Government of Tamil Nadu | http://www.tn.gov.in/ |
| Town Panchayat | http://www.tn.gov.in/dtp/? http://www.townpanchayat.in/ |
| Municipal Administration and Water Supply Department | http://www.tn.gov.in/maws/ |
| Tamil Nadu Infrastructure Development Board | http://tnidb.tn.gov.in/ |
| Right to Information | http://rti.gov.in |
| Tamil Nadu Institute of Urban Studies | http://www.tnius.org |
| Swachh Bharat Mission | https://swachhbharatmission.gov.in/sbmcms/index.htm |
| Chennai Metro Water Supply and Sewage Board | https://chennaimetrowater.tn.gov.in |
| Department of Rural Development and Panchayat Raj [Tamil Nadu] | https://tnrd.gov.in/ |
| Ministry of Housing and Urban Affairs, Government of India | http://mohua.gov.in |
| Tamil Nadu Water Supply and drainage Board | https://www.twadboard.tn.gov.in/ |