Backdrop CMS is a simple, lightweight, and easy to use Content Management System used to build attractive, professional websites. Use it for everything from a single-administrator's personal blog site, to a complex, multi-role, business e-commerce platform.
Chyrp is a blogging engine designed to be very lightweight while retaining functionality. It is powered by PHP and has very powerful theme and extension engines, so you can personalize it however you want.
United States
Mused enables museums and heritage sites around the world to publish professional digital exhibitions to engage with their communities. They integrate with virtual tours to create guided tour experiences for member-only benefits and enable heritage institutions to reach goals...
LavaLite is an open source content management system (CMS) based on PHP and Laravel web application framework. It currently supports MySQL, SQLite, MariaDB and PostgreSQL for the database backend.
India
Umbraco is a fully-featured open source content management system with the flexibility to run anything from small campaign or brochure sites right through to complex applications for Fortune 500's and some of the largest media sites in the world.
United States
blogstrap.py is a simple, no frills blog content management system powered by Twitter's Bootstrap and web.py. It features most things you would come to expect from a simple blogging platform. You can browse posts by category or subcategory, see recent posts, and mark...
Moopato Website Builder is an Offline Content Management System (CMS). It runs on your local machine and not on a server. You create your content locally, build the whole site with the push of a button and then you can upload it to your hosting provider.
Germany
EU
In a nutshell, Bridgetown is a static site generator. You give it text written in an author-friendly markup language like Markdown, and it uses layouts and templates to build a website and save the compiled HTML, CSS, and Javascript to an output folder.
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.
Denmark
Portugal
