MemPad is a plain text outliner and note taking program with a structured index. All pages are stored in a single file. User interface available in 20 languages. Unicode.
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. Environment variables can be used in file links to run programs, for example.