TEA

TEA is a really light text editor which is free and supports file formats like RTF, KWord, Abiword or OpenOffice.org.

Furthermore, TEA includes help tools for development, sintaxis highlight, autocomplete, scripts support or browser preview.

TEA also allows you to load, view and convert images formatted as PNG, JPEG, GIF, WBMP, BMP, SVG or TIFF.

It may be a bit confusing for novice users, but if you need a versatile text editor, TEA can be a good choice.