Maggo is an excellent magazine theme original designed by ChiQ Montes.
Main features

Three columns with left and right sidebar
Good design with nice color scheme
Built-in RSS feed and Email Subscription links
Built-in Search box
Nice navigation tab
Nice comment box
Ad boxes ready (125×125)
Google Adsense ready (468×60 banner, 120×600 sidebar, 250×250 sidebar)

NoteBook is another Free Blogger Template by RayCreationsIndia.com
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Dark Mistry is another creation by RayCreationsIndia.com

Green Leaves is a blogger template created by RayCreationsIndia.com
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Meta-Morphosis is a visually-rich personal blog, with a magazine layout approach. Incorporating some nifty javascript font replacement and javascript widget slider in the footer, Meta-Morphosis should meet all of your personal blogging needs. Best of all its FREE!

phpBB is a popular Internet forum package written in the PHP scripting language. The name “phpBB” is an abbreviation of PHP Bulletin Board. Available under the GNU General Public License, phpBB is a free software.
phpBB was started by James Atkinson as a simple UBB-like forum for his own website on June 17, 2000. Nathan Codding and John Abela joined the development team after phpBB’s CVS repository was moved to SourceForge.net, and work on 1.0.0 began. A fully functional, pre-release version of phpBB was made available in July.

Simple Machines Forum (abbreviated as SMF) is a freeware Internet forum application. The software is written in PHP and uses a MySQL database backend, although multi-database support is being developed for version 2.0. SMF is developed by the Simple Machines development team.
SMF was created to replace the forum software YaBB SE, which at the time was gaining a bad reputation because of problems with its Perl-based ancestor software YaBB[citation needed]. At the time, YaBB was attributed to causing resource allocation problems on many systems. YaBB SE was written as a …

At a glance, it looks like the same old YouTube, nothing special except the black “youtube edu logo”, What is interesting is the new Directory menu, showing a list of schools, which are actually youtube Channels..

osCommerce (“open source Commerce”) is an e-commerce and online store-management software program. It can be used on any web server that has PHP and MySQL installed. It is available as free software under the GNU General Public License.
osCommerce was started in March 2000 in Germany by project founder and leader Harald Ponce de Leon as The Exchange Project. While osCommerce is still officially in its development stage, the current Milestone 2.2 release (Release Candidate 2a) is considered stable. As of August 2008 the osCommerce site says that there are …