Mozilla release Firefox 3 Beta 3 for testing. FF 3 Beta 3 targeted to Web developers and our testing community to gain feedback before advancing to the next stage in the release process. This one've a lot of useful features. You know, I already posted about FF 3 beta 2 review. now, I'll not write review about 3 beta 3 this time. You can see the list of new features . You can also get FF 3 Beta 3 as portable apps now.

Portable Firefox 3 beta 3 download

[Improved in Beta 3!] Firefox 3 Beta 3 includes approximately 1300 individual changes from the previous beta, including fixes for stability, performance, memory usage, platform enhancements and user interface improvements. Many of these improvements were based on community feedback from the previous beta.
More Secure

* [Improved in Beta 3!] One-click site info: Click the site favicon in the location bar to see who owns the site and to check if your connection is protected from eavesdropping. Identity verification is prominently displayed and easier to understand. When a site uses Extended Validation (EV) SSL certificates, the site favicon button will turn green and show the name of the company you're connected to.
* [Improved in Beta 3!] Malware Protection: malware protection warns users when they arrive at sites which are known to install viruses, spyware, trojans or other malware.

Easier to Use
[Improved in Beta 3!] New Download Manager: the revised download manager makes it much easier to locate downloaded files, and you can see and search on the name of the website where a file came from. Your active downloads and time remaining are always shown in the status bar as your files download.
[Improved in Beta 3!] Podcasts and Videocasts can be associated with your media playback tools.

More Personal
# [Improved in Beta 3!] Star button: quickly add bookmarks from the location bar with a single click; a second click lets you file and tag them.
# [Improved in Beta 3!] Location bar & auto-complete: type in all or part of the title, tag or address of a page to see a list of matches from your history and bookmarks; a new display makes it easier to scan through the matching results and find that page you're looking for. New in Beta 3 is an improved search algorithm which calculates the recency and frequency of a visit to come up with a frecency score that is used to determine the most relevant results.
[Improved in Beta 3!] Download & Install Add-ons: the Add-ons Manager (Tools > Add-ons) can now be used to download and install a Firefox customization from the thousands of Add-ons available from our community add-ons website. When you first open the Add-ons Manager, a list of recommended Add-ons is shown.

Improved Performance
# [Improved in Beta 3!] Speed: Major architectural changes (such as the move to Cairo and a rewrite to how reflowing a page layout works) put foundations in place for major performance tuning which have resulted in speed increases that continue to increase page drawing speed in Beta 3. This release also features over 90 changes that improve performance over the previous beta.
# [Improved in Beta 3!] Memory usage: Over 350 individual memory leaks have been plugged, and a new XPCOM cycle collector completely eliminates many more. Developers are continuing to work on optimizing memory use (by releasing cached objects more quickly) and reducing fragmentation. Beta 3 includes more than 50 improvements to memory use over the previous beta.

Firefox, Firefox 3 Beta 3