http://www.gktoday.in/: It is a leading website providing valuable information pertaining to GK and Current Affairs.
http://www.indiabix.com/: This website offers huge repository of subject wise information in the form of questions and answers for Bank, Government and other competitive exams.
http://www.gkduniya.com/: On this website, one can get all the updated current affairs till current date of the current month, as it is quite promptly updated. It has GK question answer as well. This website also gives brief knowledge about aptitude, reasoning, world-wide general knowledge.
http://www.jagranjosh.com/:Here students can discuss freely and get answer to their queries.
http://careeradda.co.in/: It is a platform where aspirants can have systematic discussions, upload documents, initiate polls and can have private chat with each other regarding the competitive exams.
http://blog.talentsprint.com/ : This is a place for you to catch up on blog posts that provide not just important information but also tips and techniques.