Ubuntu server is my personal favorite. From SSL to redis and mailgun integration. The base setup I use/recommend is Ubuntu with PHP, mailgun, redis, nginx and MySQL.
I've been building websites since I was twelve years old. After picking up PHP that quickly became building CMS's and with my current job, back to building websites utilizing frameworks.
I've worked on this government website since 2012 and have been the majority developer. Powered by Zend 1 framework.
Government jobs website built in CakePHP 2.
PDF generation website written in Laravel 5.2 with the wkhtmltopdf/wkhtmltoimage library. Using the Materialize CSS framework.
Jacco Gardner music band website built in the AdaptCMS PHP framework and designed with Bootstrap CSS.
Laravel 5 website using Materialize CSS and the S3 PHP library to store images in a CDN.
Custom-built content management system, written in CakePHP 2 PHP framework.
Tame Impala fan website. Using own CMS, AdaptCMS, along with some custom PHP and phpBB integration with the CMS.
CakePHP 2 framework built site at work. I've been involved heavily in development.