Localize - Localize is a no-code translation solution for SaaS platforms, allowing you to easily translate your web app, dashboard, API docs, and much more.
Sitecake - Drag and drop CMS for HTML websites. It's flat file CMS so it's pretty fast.
Crowdin - Localize your product in a seamless way
Anchor CMS - Free and lightweight blogging system
Localizer - Free self-hosted open-source crowd-translating service
Textpattern - Textpattern is an elegant content management system that is free, open source software.