Some of us installed and use more than one browser on our system. For example, i am using Opera, Firefox, IE, and Google Chrome. So, managing my bookmarks across different browsers bring a lot of trouble to me. Luckily, there is an free application called Transmute, which can copy your bookmarks from one browser and then export it to another browser.

Simply choose the source and target browser and click the Export button. Currently, Transmute support Google Chrome, Firefox, IE, Opera and Safari. the advance settings allow you to create a backup for your bookmarks and append timestamp at your export file.
This application require .NET Framework to run. Before performing any conversion, remember to close all browsers, else you will get error messages. It is because your browsers will lock the bookmarks database and prevent any write action on it.
Download Transmute
Source: Manage Bookmarks between Different Browsers with Transmute


Thanks for the link
As an alternative bookmark manager i use Advanced URL Catalog. using this software is easy and it integrates with all browsers.