SAP stands for Systems, Applications, Products in Data Processing and it is business management software used all around the world. One of its main advantages is that it is very simple to use so you do not have to be an expert.
Android is a mobile operating system developed in private by Googleuntil the latest changes and updates are ready to be released and then the source code is made public.
Joomla is a very popular content management system (CMS). It was founded in 2005 and now more than 200,000 people are part of its community.