I've been using Joomla open source CMS over three years now. In my web development journey i have used hundreds of commercial and non-commercial extensions for various volunteer and commercial projects. As you know Joomla is serving more than eight thousands extensions to the community. I have found some of the extensions very useful, like i can't live without them. You may not like all components i've listed here and you may also think that there are many other useful stuffs. But i can't enlist all of them in this my top ten favorite list. These list are mainly Joomla components, there are many other modules and plugins which are very useful too. I will try to list them separately in my future posts.