DayBook is a visual, browser-based drag-and-drop time-tracking application for project-oriented professionals. It includes a report designer and customizable user options. Simply define projects and tasks, then drag tasks to the 24x7 activity grid to create time entries. Time entries can be resized, moved and copied. Default and custom time-entry comments are supported. Projects and tasks are organized in a hierarchical tree structure (with inheritance). Tasks can be billable or not. Optional data fields are provided for accounting codes, client info, billing rates, etc. Tree structure also includes organizational folders so projects and tasks can be organized to reflect the working environment. Included context-sensitive tools allow reorganizing tasks and folders. Shortcuts to frequently used tasks are available. DayBook can run within browser-hosting applications such as Microsoft Outlook. DayBook runs entirely on the local computer -- no Internet connection is needed. Data is stored in XML format in the Internet Explorer "user data" area or in a defined subfolder of the application (licensed version only). DayBook is a light-weight application that can be left open all day without affecting the computer's performance. It can be copied between computers and has no registry entries. It requires no external resources; although use of the computer's disk file system requires the Windows scripting Active-X control known as the File System Object (licensed version only). DayBook is provided as a self-extracting zip file. When installed, DayBook consists of a set of nested folders with the startup file in the top-level folder. It can be uninstalled by simply deleting the folder set.