With this page I want to say thank you to all involved extensions (and their developers) which are used on this project site (no particular order):

Core

Joomla! - The CMS Trusted by Millions for their Website - Version 3.x

IDE

PhpStorm - PHP IDE that goes beyond the language

Template

JoomlArt - T3 Framework

Membership Management

Akeeba - Akeeba Subscriptions

Forum

Kunena - To Speak! Next Generation

Download

Phoca - Phoca Downloads

Optimization

JCH Optimize - Aggregating and minifying external CSS and Javascript files

Hosting

1&1 Joomla Hosting - Cloud Server

CDN

CDN by MaxCDN - Experts in Content Delivery Network

Security proxy

CloudFlare - The web performance & security company

SSL certificate

GeoTrust - RapidSSL SHA256 CA - G3 - Wildcard