Main features:
- Hot backups, no downtime
- No agents
- Self capable, self contained, no dependencies
- Runs in the hypervisor host
- Crontab programmable
- Compatible with ESXi 5.1, ESXi 5.5 & ESXi 6.0
- Free and Open Source
Official project page on Sourceforge for doc and download
http://sourceforge.net/projects/xsibackup