1- FLEXIcontent
FLEXIcontent is primarily an advanced content management system developed to replace the native article manager of Joomla! 1.5 (com_content)

2- Art iSlider
Art iSlider is Joomla! module that slides articles in a nice apple way.

3- Handy Photo Album
Handy Photo Album is a Photo Album Component For Joomla! that automates the retrieval of all images within a specific directory to show, with pagination links generated to cycle through each page. The simplicity is one of the key for this components and the lightbox viewer system complements it all.

4- Jfaq
A small component for FAQ management.

(Mac only) Blogo is by far one of the easiest and most complete desktop blogging application we’ve seen. Easily publish text, images, videos, slideshows and more.

New version of Blogo, 1.2.6. The new version brings two major new features to the app: support for Joomla, one of the most popular content management systems out there, and the addition of Google Translate to both the blog editor and Twitter client.

With a simple, intuitive interface and support for Wordpress, Blogger, Typepad, Typo, Drupal, Joomla, and Expression Engine, Blogo is the best way to maintain your blog and spread the word with Twitter, Ping.fm and other supported services.

Ticket system component for Joomla 1.5 with e-mail notification function, and an individual permissions for each registered user.

The new version of the Webamoeba Ticket System addresses a number of issues. Due to the nature of the changes it is highly recommended that you backup your database before upgrading to this version.

I did simple mambot for polldaddy users. You can add polls on your content easly. If you are fireboard user you can use with fireboard too.