Internet Explorer 9 and 8
Click Tools, and select Delete Browsing History... .
Deselect Preserve Favorites website data, and select Temporary Internet files, Cookies, and History.
Click Delete.
-----------------------------------------------------
Firefox 3.5 and above for Windows
From the Tools menu, select Clear Recent History... . Alternatively, in Firefox 4 and above, you can also click the orange Firefox button, and then select Clear Recent History from the History menu.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Click the down arrow next to "Details" to choose what history elements to clear (e.g., check Cookies to clear cookies). Click Clear Now.
-----------------------------------------
Chrome
In the browser bar, enter:
chrome://settings/clearBrowserData
Select the items you want to clear (e.g., Clear browsing history, Clear download history, Empty the cache, Delete cookies and other site and plug-in data).
From the Obliterate the following items from: drop-down menu, you can choose the period of time for which you want to clear cached information. To clear your entire cache, select the beginning of time.
Click Clear browsing data.
--------------------------------
Safari
From the Safari menu, select Reset Safari... .
From the menu, select the items you want to reset, and then click Reset. As of Safari 5.1, Remove all website data covers both cookies and cache.
------------------------------------------
Firefox 3.5 and above for Mac OS X
From the Tools menu, select Clear Recent History.
From the Time range to clear: drop-down menu, select the desired range; to clear your entire cache, select Everything.
Click the down arrow next to "Details" to choose which elements to clear. Click Clear Now.
---------------------------------------------
Mobile Safari for iPhone iOS 6.1 (iPhone, iPod touch, iPad)
To clear cache and cookies:
From the home screen, tap Settings, and then tap Safari.
At the bottom of Safari's settings screen, tap the buttons for Clear Cookies and Clear Cache. To confirm, tap Clear Cookies or Clear Cache again.
To clear history:
From the home screen, tap Safari.
At the bottom of the screen, tap the Bookmarks icon.
In the lower left, tap Clear.
Tap Clear History.
------------------------------------------
Android
To clear cache, cookies, or history:
Start your browser.
Tap Menu, and then tap More.
Select Settings.
Under "Privacy settings", select Clear cache, Clear history, or Clear all cookie data as appropriate, and then tap OK to accept (or Cancel to cancel) the deletion.