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

Winkl - Winkl helps lifestyle bloggers become influencers.

Anchor CMS - Free and lightweight blogging system

Blogsvertise - Blogsvertise is an influencer marketing software designed to help businesses discover content creators, collaborate with influencers, and manage marketing campaigns on a centralized platform.

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

Portfolio CMS - Portfolio CMS is an open-source, highly customized blog and CMS written in Redux and Rails API.