Nold - Nold offers a smartphone based access control system for both personal and business use.
Kisi - Cloud-managed keyless access for the office
Brivo - Brivo offers cloud access control solutions.
doorbot - The Wi-Fi enabled doorbell for smartphones
Openpath - Openpath is the smarter, easier cloud-based mobile access control solution. Door access control system with touchless, smartphone, badge, and key card support.
Proxy.com - Access the office effortlessly, using your phone