RapidWeaver stuff
I have written some plugins for RapidWeaver from Realmac Software, the best webdesign tool available for Mac's. Some are donationware and some are commercial. Common for all of them is that you can Download them and check them out yourself before you purchase or donate.
Yampp stuff
I have also written some software for yampp mp3 players. You can download ylink, the music and playlist manager for the yampp-3/u and yampp-7 players created by Jesper Hansen.