Perch is a lightweight PHP content management system ideally suited to smaller websites.

Tinysite is an attempt to create minimalistic secure blog engine for running a darknet blog site. It has only some basic features yet, e.g. adding and displaying posts, categories.

Ionize is a free professional multilingual and user-friendly PHP Content Management System (CMS) based on CodeIgniter.

Bis[ku]it is a modular and lightweight CMS built with Symfony components and Vue.js, a renaissance of Pagekit.

LOCOMOTIVE is an open source CMS for Rails. It's super flexible and integrates with Heroku and Amazon S3.

It is an open source tool that provides a complete architecture for developing PHP applications. Is a framework that uses commonly known enterprise design patterns like MVC, ORM design patterns like Active Record and Repository.

Open Source, Ruby on Rails Content Management System (CMS). [Free].

BlazeBlogger is a simple to use but capable CMS for the command line. Being written in Perl as a cross-platform application, and producing static content without the need of database servers or server-side scripting, it is literally a CMS without boundaries suitable for a wide...

ViUR – the Information System for the Google App Engine™ plattform – is a »sandbox« for designers and developers. With the help of ViUR you can easy build web applications running on Google's infrastructure.

CMS.js is fully client-side, Javascript site generator in the spirit of Jekyll that uses plain ol' HTML, CSS and Javascript to generate your website.

Croogo is a free, open source, content management system for PHP, released under The MIT License. It is powered by CakePHP MVC framework.

BardCanvas is an Open Source CMS that fits perfectly for blogs/forums/social networks. It is fast (through several cache levels), heavily optimized (it wont collapse the server in high traffic conditions) and constantly improved.