DockBlock is a Development software developed by sideburn. After our trial and test, the software is proved to be official, secure and free. Here is the official description for DockBlock:
EditByBSEditor: Sometimes, even when the Dock is hidden you don't want it popping up and covering your tools. Especially when in full screen applications. Dockblock appears in the menubar and lets you toggle the Dock between AutoHide, Show, and a new Disable mode that shuts the dock down completely. DockBlock also includes an Application menu and can be set to display your iTunes track info in the menu bar. DockBlock makes an excellent companion to other alternative dock like applications and utilities. DockBlock is shareware. That means that you can download a Copy freely to see if you like it, and if you decide to use it you should register your copy. In return for registering you will receive a registration key which will disable the reminder message at startup. A single user license for DockBlock costs $5.00. you can free download DockBlock 1.2 now.