Quicknote aims to be a dead simple unformatted note taking application with support for categories. The note names are taken from the first line of your note.
Quicknote has been tested on Ubuntu 9.05, Maemo 5, and Maemo 4.1
See also Quicknote's old webpage
Quicknote is Free Software and available under the GPLv2.1.
Quicknote 0.7.8 (See t.m.o Thread)