AddToAny is a universal sharing platform that can be integrated into a website by use of a web widget or plugin.
cdnjs is a free distributed JS library delivery service.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Drupal is a free and open-source web content management framework.
Mailchimp is a marketing automation platform and email marketing service.