Joomla and Mambo CMS have been developed by the same professionals of web design industry. So, they possess a lot of common features. For example similar code, system requirements, etc. At the same time new releases of Joomla will differ from Mambo. Having compared Joomla and Mambo CMS‘s you can notice that Joomla has more options, better security issues, regular updates, additional Built-in-Applications, etc.
In the old days people would always hire a professional website designer because they felt this was the best way to ensure they got a professional looking website made. Companies and individuals were willing to spend thousands of dollars for the chance to create a web presence that would give them a good image. Nowadays, especially because of the state of the economy, many companies and individuals are deciding to go with website templates instead of a website designer or developer. There are a multitude of reasons for this.