Yesterday, we did released an experimental version of our first Google Chrome extension. It's for looking up checked out books from a library. It's called LibLib Check.
You can get it at Chrome Extensions website.
The extension fetch patron information, in XML format, from Dynix OPAC (it currently work only with Dynix, and more likely to only certain versions). Then it extracts items checked out information (titles, due dates, number of overdue items) and show them as a toolbar icon and a popup. We tested this with Thammasat University Library's system (Dynix Horizon Information Portal 2.1), and it works well.
Opendream is a core partner of Thailand Digital Library Network initiative. We recently working with a number of libraries, universities and research bodies, on various library and information service softwares, in a progress to connect digital libraries in Thailand with open standard protocols.