WHMCS - WHMCS is an all-in-one client management, billing & support system for online businesses.
OneLogin - On-demand SSO, directory integration, user provisioning and more
HostBill - HostBill is a powerful and flexible, all-in-one automation, billing, client management and support platform for online businesses.
TeamPassword - TeamPassword helps you manage and share access to the apps, services, and tools your team needs to keep projects moving.
Blesta - Blesta is professional client management, billing, and support software.
Teramind - Teramind provides a user-centric security approach for monitoring.