Hi,
Can two plugin communicate with each other and share saved configuration items
any thing available under MIPS SDK
If you save a configuration item you can use it in another plug-in, the Server-side Caroussel sample shows how items saved in a Management plug-in is used in a Smart Client plug-in.
The Property sample shows sharing of a simple property if you do not have the need for an item.
Sharing configuration items is in some sense communication but if you are looking for communication in real-time try to explore the Chat sample.