The open source Mozilla Foundation is expected to release the first beta version of its Firefox 2.0 browser this week.
The new version of the browser is expected to increase user functionality as well as tighten up on security.
Version 2.0 has been in alpha mode among developers since this March and a release candidate for the browser has already been made available.
The full beta is expected to be made available to a much wider audience, however.
The new version of the browser will include an "undo close tab" feature, which allows users to recover web pages after they have accidentally shut down windows.
A spell checker designed to work with web forms is also expected to be included in the new version.
Web analytics firms say Firefox is now being used by around 13% of web users. The dominant Microsoft Internet Explorer is still used by around 85% of users.
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