ExtendedExchanged is a ProjectE addon that adds upgraded versions of PE items.
Magnum Stars
Magnum Star Omega can store up to 209'715'200'000 EMC!
Knowledge Sharing Book
Shift-right-click to copy your knowledge and give it to another player and if they right-click, they get your knowledge and destroy the book.
Tome of Knowledge
Tome of Knowledge is now craftable!
The Final Star
An item that gives you infinite EMC, but this will probably be nerfed.
Personal EMC Link
This lets you directly import items in your personal EMC storage, which you can access from Transmutation Table.