The NanGate 15nm Open Cell Library will eventually contain the following views:
Liberty (.lib) formatted libraries with CCS Timing, ECSM Timing and NLDM/NLPM data (multiple corners)
Spice (pre and post parasitic extracted netlists)
Simulation libraries in Verilog
Geometric library in Library Exchange Format (LEF)
Cell layouts in GDSII
Library databook in HTML format
OpenAccess database containing layouts and netlists