I think moneycontrol.com is wonderful to record your trasaction of day to day. It is wonderful to watch news update of business and finance every now and then. It is best site I ever see. After recording all trasaction, it is provide you with all tax related work.
You can also judge your short term and long term gain only by updating your stock. You can easily trace out investment like mutual fund, fixed deposits, insurance policy, etc.
I like because it is very useful to find out and calculate your current position, your weekly position, your six monthly position and even yearly position. But it suffer from only one defect i.e. it is very slow to update or edit or delete or recording transction.