I use the OpenOfficeOrg 2.3 spreadsheet, which is nearly like MS-Excel only free and legal.
I download my portfolio from by broker's site (Geojit) daily or weekly depending on hyper I am.
I like trying diff. broswers and am happy with Firefox, Safari, Opera, and K-Meleon.
Firefox integrates with McAffee's Site Advisor which flags a site as green, yellow or red depending on the feedback/info McAfee has on the site. That way you can avoid potential nasties.
And yes, I do have to use MS Internet Explorer for sites that use code that only MS has An example is ICICI-Prudential Mutual Fund's online investment site wherein you can buy/sell/switch units of their funds. These transactions are 100% dependent on "ActiveX", a technology that other browsers don't support on security grounds.
Another example is Geojit's customer care site which also seems to be created with IE in mind.
Please correct me if I'm wrong, but a site's filename with .asp as the suffix would indicate that you are better visiting that site with IE.
After just a few months experience only, I feel the best option is to use your on-line broker's information for the quotes on stocks you own. I think they're as close to live as you can get.
Even the BSE and NSE sites display data after a lag compared to your on-line broking site.
I stress that you must look at your actual trading site rather than one which is put up for public viewing.
Please correct me if I'm wrong on this. My reason for saying so is that both exchanges have "contracted" the dissemination of quotes and the time-lag is inversely related to the bucks the customer pays.
If you are also investing in MFs along with equity then the portfolio manager at valueresearchonline.com is very good. It has very good MF content alongwith an easy portfolio manager (MF SIP function too is good).