Some selected software/programs for power analysis of growth curve models and multilevel models are listed below.

• Power analysis IN Two-level designs (PinT) by Tom Snijders
  
• Multilevel Desgin Efficiency Using Simulation (ML-DEs) by  W. Cools, W. Van den Noortgate, and P. Onghena
  
• MLPowSim by William Browne and Mousa Golalizadeh
  
• Optimal Design for Longitudinal and Multilevel Research by Spybrook et al.
  
• RMASS2 by Don Hedeker