Apache is a free and open-source cross-platform web server software.
Clutch review widgets are stand-alone applications that you can embed on your website to show your dynamic ratings and reviews.
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.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Ubuntu is a free and open-source operating system on Linux for the enterprise server, desktop, cloud, and IoT.