Opera Unite

Some details:
Take control of what you share online
Opera Unite allows you to easily share your data: photos, music, notes and other files. You can even run chat rooms and host entire Web sites with Opera Unite. It puts the power of a Web server in your browser, giving you greater privacy and flexibility than other online services.

Share with other Web browsers
What if you use Opera at home, and a different Web browser at work? Opera Unite services can be accessed from any modern browser, including mobile browsers! At home, just select what you want to share, and you can view it later using your work Web browser without any problems.

Integrated and extendable
Simply enable Opera Unite when you start Opera, and you are ready to go. Find and install services with one click from our online catalog or easily create your own by using Web standards like HTML, CSS, JavaScript, SVG and AJAX.

To read more - http://unite.opera.com/