There's also a similar deal to the TTIP called CETA that Canada are involved in:

https://en.wikipedia.org/wiki/Comprehensive_Economic_and_Tra...

As far as I know there are roughly 5 multinational trade deals in the works at the moment... TPP, TTIP, TISA, CETA and one more I forgot the name of that involves China.

EDIT: The multinational trade deal currently being negotiated that involves China is the RCEP:

https://en.wikipedia.org/wiki/Regional_Comprehensive_Economi...