MemPad is a plain text outliner and note taking program with a structured index. All pages are stored in a single file. The program offers standard editing functions including cut, copy, paste, undo, date/time insert, drag&drop, and supports Web links as well as network and local file or folder links (full path not required) and internal page links. Environmental variables can be used in file links to run programs, for example.

The index structure can be modified with buttons, context menu or hotkeys. MemPad always saves data without prompting (when closing Mempad or opening another file). There's also an optional auto save every 4 minutes.

The program's ptions include: Custom font, Background color, Minimize to System Tray, Hotkey, Always on top, ESC shortcut to quit or minimize. It also features popup menus with user defined words or expressions to insert, optionally with date and time tokens.