BugHerd is a cloud-based feedback collection and bug management tool.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
ipify is a service which provide public IP address API, IP geolocation API, VPN and Proxy detection API products.
Zendesk is a cloud-based help desk management solution offering customizable tools to build customer service portal, knowledge base and online communities.