http://www.companylawinfo.comimage
This is one of the most comprehensive site catering to all those concerned with Corporate Law.

http://www.sebi.gov.in
This website is hosted by Securities and Exchange Board of India (SEBI).

http://www.dca.nic.in
This website offers the details of the Companies Act, 1956 and The Monopolies and Restrictive Trade Practices Act 1969. Besides it also provides information on the following acts:
(a) The Chartered Accountants Act, 1949.
(b) The Cost and Works Accountants Act, 1959.
(c) The Company Secretaries Act, 1980.
(d) The Partnership Act, 1932.
(e) The Societies Registration Act, 1860.
(f) The Companies (Donation to National Fund) Act, 1951.

http://www.icai.org
ICAI is a professional organisation that offers CA and CPE certifications. The site provides ICAI results, and publications and articles regarding accounting and auditing.

http://www.rbi.org.in
This website is hosted by Reserve Bank of India and offers information on-RBI Notifications & RBI Press Releases.

http://www.nic.in
This website is hosted by National Centre for Trade Information and offers relevant information related to trade.

http://www.finmin.nic.in
This website is hosted by Ministry of Finance and offers information on financial policy decisions of the Govt. of India.

http://www.commin.nic.in
This site is hosted by Ministry of Commerce and offers information related to commerce in India.

http://www.dca.nic.in
This site is hosted by Ministry of Company Affairs and offers information related to company affairs in India.