Browsing files in Mac OS X's Finder isn't always convenient, which is why Apple has seen fit to add tabs to Finder in the upcoming release of OS X 10.9 Mavericks. Browsing files with tabs is easier and more convenient for heavy file operations because you don't need to open multiple Finder windows.
XtraFinder is an OS X app that replaces Finder and adds tabs. There are other Finder alternatives that support tabs, but XtraFinder is available for free. After installing XtraFinder, launch the app and enable tab support in preferences.
You can also create custom keyboard shortcuts, enable dual panel mode, reverse the text and background colors, and other options.
If you're waiting for Finder tabs in OS X 10.9 Mavericks, you might want to give XtraFinder a try. It's free and available right now.