Tokyo based 3Di released yesterday 3Di OpenViewer, the first commercialized browser-based viewer for OpenSim applications.
The press release states that the main features of the software are :

View and interact with 3D virtual worlds inside of web browser
Easy integration with existing web services
Designed for ease of use; navigation requires only the mouse
Supports“Internet Explorer”

Not too much info, [...]

A really old news, took time to bubble up. It's all in the title : VastPark announced they started writing a plugin that will allow hosting of their IMML documents on OpenSim servers.
What does this mean?
OpenSim is a widely accepted free 3D (virtual world, in our case) application server. Up to now, all the protocols [...]