Originally a vSphere backup tool, Trilead's VM Explorer now supports backup of Hyper-V servers with its standout feature being its economical price tag. It offers backup and restore of both vSphere (including free ESXi) and Hyper-V servers, vCenter support, replication, application-consistent backups/restores with VSS, file-level restore, email notification and logging of tasks to the Windows event log. Trilead claims they have the simplest pricing structure of any Hyper-V backup tool. You pay per installation, rather than per host or VM. Prices start at $760, which includes one year of updates and support.