Whatfix - Whatfix Enterprise: Enhancing self-service capability of any web product
nginx - A high performance free open source web server powering busiest sites on the Internet.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!
AWS Elastic Load Balancing - Amazon ELB automatically distributes incoming application traffic across multiple Amazon EC2 instances in the cloud.
ZenDesk - Zendesk is a beautiful, lightweight help-desk solution.
Google Cloud Load Balancing - Google Cloud Load Balancer enables users to scale their applications on Google Compute Engine.