Mozilla has developed software that it claims will be able to display all versions of electronic messages, from email and RSS feeds to IMs and even alerts from social networking sites such as Facebook and MySpace.

According to Mozilla, the initial prototype of the Firefox add-on, which is called Snowl, supports RSS/Atom feeds and Twitter. It also features two different types of interface; one similar to email software with three viewing panes and the other in a 'river of news' style.

"It doesn't matter where messages originate," Mozilla said in a blog.

"They're alike, whether they come from traditional email servers, RSS/Atom feeds, web discussion forums, social networks, or other sources."

The software developer is urging users to provide feedback on the concept and whether it's worth pursuing.