Pixieset - Beautiful photo galleries for photographers and their clients.

Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.

Format - Online portfolio platform for creatives; photographers, designers, artists and more.

Anchor CMS - Free and lightweight blogging system

Pixpa - Pixpa is an all-in-one platform to create beautiful, professional portfolio websites, client galleries and online stores without any coding knowledge.

Textpattern - Textpattern is an elegant content management system that is free, open source software.