See the extensions we use to build joomla! our sites. 
It is an opportunity to thank - once again - those who work so that others can enjoy their products for free (or at low cost).

CMS

Joomla: http://www.joomla.org/

Template - Page Builder

Helix Ultimate - Template Framework: http://www.joomshaper.com/helix

SP Page Builder - Page Builder: http://www.joomshaper.com/page-builder

Extensions

SP Image Gallery: https://www.joomshaper.com

SP Simple Portfolio: https://www.joomshaper.com

arithmos.gr: https://www.arithmos.gr

Font Awesome: http://fortawesome.github.io/Font-Awesome/

Bootstrap CSS: http://getbootstrap.com/

Free photos: https://www.freepik.com/

Free photos: https://www.pexels.com/