Apache is a free and open-source cross-platform web server software.
Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
MailerLite is an email marketing tool and website builder for businesses of all shapes and sizes.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Weblication is an enterprise-class website content management system developed by Scholl Communications AG in Germany.