notes.vim
The notes.vim plug-in makes it easy to manage your notes in Vim by providing several (automatic) commands and an advanced syntax mode. For more information about the plug-in please refer to its homepage or the project page on GitHub:
NERDTree
The NERD tree allows you to explore your filesystem and to open files and directories. It presents the filesystem to you in the form of a tree which you manipulate with the keyboard and/or mouse. It also allows you to perform simple filesystem operations.