The ESSR web portal contains a list of projects, search function and blog functionality among others. Most projects are owned by ESA and contributions are handled by ESA internally. However, non-ESA owners can request, through the tool, to have their project added by filling a form.

Like the majority of new web applications, ESSR is built on a framework, for better maintainability and structure. Innobyte chose Symfony2, a modern framework, which is mature and stable enough to be safely used in production.

Several technologies were used to implement the functionalities of the project: Symfony, ElasticSearch, Compass, jQuery, jQuery UI, relational databases and agile software development.