jUpgrade is a Free Joomla 1.5 component would migrate all of the data from old Joomla 1.5 to the new Joomla 1.6 installation After that download a version of Joomla 1.6, decompress it and install it.

JNavigation is a modification of the Page Navigation plugin for Joomla! will replaces the standard page navigation for navigation buttons aligned to the top, bottom, right, center or left of the text. Validation XHTML and CSS: Yes. You need to disable the Page Navigation Plugin in the Plugin Manager.

Feedbingo is a universal Feed automatic content aggregator for Joomla 1.5 Just set the url for content source and sit back, relax. eedbingo is working for you all the time to get you more traffic from RSS to custom XML feeds from any third party site just name it and feedbingo will pull it for you.

BreezingForm 1.7.0 It's 3-in-1: For non-programmers, designers and technicians for free use that you can create powerful and ergonomic forms in minutes. its Includes many nice features like file upload progress bar, summary pages, "pay to download", turn fields on/off, effects and more. See videos!

Edocs Embed Documents Plugin for Joomla! makes use of Google Docs Viewer and allows you to embed a document directly into any article, allowing the visitor to view it online without the need to download it before. Just upload your document to your server and use the code below!

Akeeba Backup Core is an open-source backup component for the Joomla! formerly JoomlaPack, Its create a site backup that can be restored on any Joomla!-capable server and creates a full backup of your site in a single archive. The archive contains all the files, a database snapshot and an installer similar in function to the standard Joomla! installer.

BookMark Share is a Very Easy and handy admin to control this module to share posts on a number of social networks like Facebook,Digg,Google-Bookmark,Delicious,DZone,reddit and retweet, It supports all the modern web browser's like Firefox,IE-7,8,Chrome,Opera etc...

Custom Meta Tags is a powerful Joomla! SEO plugin that you'll be able to define custom metadata for each of your articles with HTML title for the serach engines, you can use the metadata configuration of Joomla! or this plugin, the only difference is that, for example and canonical URL, meta keywords.