jCore is a Multi Site web Content Management System build especially for webmasters (using the well known LAMP environment) who have to maintain multiple websites for their clients and they would like to keep the source codes up to date and easily fix bugs for all clients at once.

jCore has two main systems, jCore Server – which holds all the libraries and modules you can build on, and jCore Client – which is the stripped version of the core system without any libraries as it uses the ones from the core.

Because jCore use a Dynamic Web 2.0 layout, the designer’s job is totally separated from the developer as the designer can create new Blocks (divs) from the admin area and define any style (CSS) / script (jQuery) for them and even limit these blocks to be shown only to defined menu items or registered/guest users and even include contents in blocks without having the need for developer to do so.

The developer on the other hand can easily write codes (Modules) that extend the site and let the designer customize these modules using their own css/js files keeping custom scripts/styles separated from the core and enabling portability.

Pricing: Free
Source: http://jcore.net/