Similar to Firefox, Internet Explorer  also lets you to have multiple homepages in your web browser.

To set multiple home pages in Firefox, follow these simple steps:

1. In the Internet Explorer top bar, go to Tool >> Internet Options.
2. On the General tab, there is a box for you to set home pages.
3. Type a web address you want to set as your homepage on each own line. Press Enter for a new line.
4. Finally, click OK.

Internet Options for Internet Explorer 7, also same for Internet Explorer 8

Next time, when you start your Internet Explorer, all the URLs mentioned as home pages will open in separate tabs at the same instance.