CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
SolarWinds Backup - Modern server backup software
TreeSize - TreeSize tells you where precious disk space has gone to.
Zerto - Virtual replication & recovery solution
CleanMyPC - A smart cleaning tool for a better-running computer.
Macrium Reflect - Macrium Software - the creators of Macrium Reflect backup, imaging and cloning software.