Well, here is a collection of few websites which have inclusive collection of online academic content.
Merit Nation: Merit Nation has the most exhaustive collection of online academic content which caters to all grades across CBSE/ISC, ICSE and state boards of Tamil Nadu, Maharashtra and Karnataka. Additionally, it also covers junior college for Science, Commerce and Humanities, and even has material for the IIT-JEE and NEET examinations.
Whatever course you are in, you can pay to upgrade to a basic or all-inclusive online course, which gives you everything you'd need. For school and junior college, the discounted price as of writing is 3,800 per grade. IIT-JEE courses range from 5,999 to 15,999, while NEET rates are between 4,999 and 11,999.
iPerform : For those enrolled in a CBSE school, iPerform is a great way to augment classroom learning. Unfortunately, the site doesn't cater to other boards of education. The e-Testing Zone offers three modes: revise, exercise or smart assessment. iPerform will analyze the student's performance and track progress, along with other parameters such as the student's focus, learning and present it all in the Performance Report tab.
India College Search: Are you in a confusion as of which college to apply for? Which is perfect for you? The course you take? Then, India College Search is the only resource you will need to make up your mind. Fantastically designed, it streamlines the whole process. First, choose the field - engineering, management, medical, law, architecture, computers, hotel management and pharmacy.
Mera Career Guide : Once you have finished your exams and now its already time to choose and decide on your future course which leads to a bright career. At this stage, its time to go up with Mera Career Guide. If you already know what career path you are interested in, try searching for it; otherwise, go through the list of 1,374 topics to see something that catches your fancy. You'll be taken to a Q&A forum with questions from other students, and which have been answered by career counsellors, letting you learn a bit more about the subject.
Other best or top websites offering Online Reference Material are: Purdue Online Writing Lab, Open Directory Project, Internet Public Library, Free (Federal Resources for Educational Excellence), Dictonary.com, the math forum@ Drexel, online etymology dictionary, graphing calculator, library spot grammar/ style and many more.