Seems that Ivan Georgiev (baobab) is responsible at least for the following:

• CategoryIcons
• PostIcons
• PostMetaManager?
• WpWikka
• Bao WordPress CMS

He is also a humble owner of the DevCorner Web Programming blog which covers

• PHP tutorials and tips and PHP Libraries
• CSS tutorials and tips
• JavaScript tutorials, tips and bookmarklets
• WordPress tutorials and tips and WordPress plugins
• and a few other