BNotes

BNotes is a simple text editor slightly better than notepad and slightly worse than wordpad. It supports text formatting, displaying the number and lines in the status bar, line wrapping... just standard. Saving is possible in TXT and RTF formats. Unfortunately, I don't know how to make TXT and RTF files open automatically in BNotes yet, so you'll have to do it manually: right-click on the TXT/RTF file, open in program -> choose program. Use the browse button to find and select BNotes and check "Always use the selected program to open files of this type".