Here you will find a list of the most popular Mambo components and modules, a short description of what they do, a download link plus how to install instructions. Currenlty, most of Mambo addons are compatible with Joomla CMS, so, you can use them on your Joomla site as well. Please remember:

When installing add-ons make sure you download them from known sources
Always make backups before you start installing addons. Always! (Mambo Forum: Mambo CMM's)

VirtueMart is a Shopping cart addon for Mambo. This Mambo shop will help you start earning cash from your web site: it supports features like unlimited products and categories, statistics for products and customers, easy sign up for accepting online payments (PayPal) and a lot more. Free Download.

JCal Pro is a calendar and events management extension for Mambo and Joomla. It is a fork of the ExtCalendar component for Mambo along with the Latest Events and Mini-calendar modules. It has a great outlook, many functions and is easy to use. Paid access to the download package.

zOOm Media Gallery is a Mambo photo gallery that can store images, audio and video and even pdf files. It has an easy user interface and allows you to create multiple galleries. Like Mambo it uses the CSS format. You are also able to create thumbnails and resize the images. zOOm Media Gallery is the preferred picture gallery component from Mambo administrators. Free Download.

Gallery or Gallery 2 is another way to store Mambo photos. To use it with Mambo, you need to get the Gallery 2 component and modules for Mambo. Free Download.

MambWeather is a nice looking weather module for Mambo Content Management System. MambWeather replaces the old MyWeather module and is developed thoroughly anew with new templates, more weather areas and multi-language support. Free Download.

MamboWiki integrates MediaWiki into the Mambo CMS. With this component you can add wiki functionality to your website. The users are able to edit and create Wiki pages, and the admins can manage MediaWiki and create menues to present selected pages. Free Download.

AkoComment is developed by Arthur Konze. This component let's the users of your Mambo website post comments. Multilanguage support, BBCode and Smilies are available. Free Download.

CMS Realty (formerly known as MamboOR) integrates the Open-Realty listings management software with Joomla and Mambo Content Management Systems. The combination of content management features and Open-Realty provides a powerful and flexible website solution for real estate agents, agencies and portals. Free Download.

Community Builder will help you manage better the users of your Mambo website. You can add extra fields in the user profile, enhance registration workflows, create user lists, define tabs, enable image upload, manage front-end workflow, integrate with other components, etc. Free Download.

ReMOSitory Mambo component organizes files that users can download. It is possible to organize files into categories, subcategories and so on to any depth. Both administrators and users are enabled to upload files. There is an option available for the administrator to approve the uploaded files. The files in the repository are located either locally on the web server or elsewhere on the web, and identified by direct URL's. Free Download.

SEF Advance component has proved to be the most powerful automated Search Engine Friendly optimization tool in the web industry. The SEF Advance works with mid-sized websites, as well, as with large websites, with much content. This component rewrite the URL from the plain www.site.com/content/view/1/2/, to the search engine friendly style: www.site.com/Section/Category/Item/. Price: $59.