To open the Bookmarks select View and then choose Bookmarks from the Viper FTP main menu. You can also use icon on the toolbar or the shortcut Cmd+B. All your servers are synced with iCloud. If you want to turn off server sharing, click the options button and deselect "Sync with iCloud".

In the Bookmarks you see a list of remote servers (and your favorite places assigned to each server) added by you to the Bookmarks. In the Bookmarks user can create groups and server entries. Groups are located at the left part while servers on the right part of the Bookmarks window. The group can contain unlimited number of servers and servers can be moved between groups by drag and drop.

To add/remove groups use buttons over the group list. To add/remove/edit/clone servers use buttons over the server list.
In Viper FTP Bookmarks there are 5 special groups (Local network, Bonjour, Recent, Quick connect and Local favorites). These groups can not be deleted nor renamed.
Below the special groups part there are user groups. User can create any number of groups, remove or rename them. User groups contains remote servers definitions. Servers can be copied between groups by drag and drop.
In the Bokkmarks you can also create Batch Uploads - multiple servers lists where you can upload items by one click.

Special groups

Bonjour - in this group you can see FTP servers running in you LAN. To connect you will need at least the user name and passowrd. Addresses are discovered automatically.

Recent - here are all the connections you made in Viper FTP in the past. Connections are sorted by the connection date. This allows you to quickly fine and reconnect last used servers.

Quick connect - You servers from Quick Connect window. You can delete and edit them here.

Local Favorites - this group allows to manage your favorites which you have previously added to Viper FTP folders.
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Viper FTP User Guide