Veeam - Veeam develops backup, disaster recovery and virtualization management software for VMware and Hyper-V virtual environments.
Freshdesk - Freshdesk is a cloud-based customer support software that lets you support customers through traditional channels like phone and email, social channels like Facebook and Twitter, and your own branded community
NAKIVO Backup for Microsoft 365 - NAKIVO Backup for Microsoft 365 delivers fast and reliable data protection and recovery for Exchange Online, Microsoft Teams, OneDrive for Business and SharePoint Online.
UseResponse - Open-source, self-hosted customer feedback software, live chat and helpdesk system that you can install on your server. Organize documentation using knowledge base and get feedback from social networks with centralized system
Altaro - Altaro is a backup software for Hyper-V and VMware.
Zendesk - Zendesk is a beautiful, lightweight help-desk solution.