Some customers may see the following message after downloading Tonido for Mac from http://www.tonido.com/tonidodesktop_downloads/#desktop
Tonido is damaged and can't be opened. You should move it to Trash."
If you see this message, please check your mac's Gatekeeper settings. Since Tonido dmg is not signed using Apple ID, Gatekeeper will not allow installation.
Change mac Gatekeeper option "Allow applications downloaded from" to "Anywhere". - See http://support.apple.com/kb/ht5290